Ask HN: Is it true that any community that grows big enough, gets ruined?

256 points by techsin101 ↗ HN
Have you ever seen an example where anything became better than before when it grew big. There is almost a law that a company, a group, a community, a game or anything once it grows past its core audience it just gets ruined.

I have seen a game with millions of players become crappy once they became mainstream and started to attract very young and very old. Suddenly all jokes were inappropriate and game themes were too family friendly.

I have seen fb go from a place of being basically school wide chat to family announcements forum.

I have seen restaurants go from personalized/affordable service, to multi-store chain food that is barely edible and more expensive.

I have seen small startup where everyone enjoyed working and build dreams to become required corporate happy hours.

Take YC, I have heard from many founders it's not what it used to be...

On that note, I am glad that HN is still a niche community and hope stays that way, and UI becomes even more crappy so people from other cultures and walks of life don't start joining in. There are negatives to this, but not huge because there are other platforms for general population. (Imagine a forum for doctors to discuss new treatments and everyone can join in, soon it'd be r/AskDoc and of almost no value to actual doctors).

213 comments

[ 3.3 ms ] story [ 240 ms ] thread
Came here to post this, if nobody had yet.

Fun fact: ~15 years ago I posted the same link to a Facebook forum.

David Fischer was in that particular forum and said something along the line of, "I am Dave Fischer, I coined that phrase, and it is still true"

Specifically with respect to forums, I'm going to repost something I wrote before:

Metcalfe's Law says that the value of a network is proportional to the number of nodes (or people) in the network. That is, V = k * n^2, for some constant k.

But we now know that there's more to the story. That valuable network attracts users, but it also attracts abusers - spammers, propagandists, trolls. They don't add to the value of the network; they detract from it.

Here's where the handwaving starts. It is my perception that the proportion of abusers rises as the size of the network rises. That means that the total number of abusers rises faster than the number of users - perhaps as the square of the number of users.

Worse, those abusers do more damage than their numbers would indicate. It's not just that you have messages that should be ignored. It's also that you have to increase the level of mistrust for every message. I'm going to guess that the abusers do damage about in proportion to the square of their number (which is itself in proportion to the square of the number of users).

That leaves us with V = k * n^2 - c * n^4, to account for the damage from abuse.

It follows that one essential of larger networks is keeping c as low as possible. Otherwise abuse destroys a network.

Also note that, for any given k and c, there is a number of users beyond which the value of the network is negative.

I feel users don't have to be nefarious to have negative effect on the network. Example, you and your 4 friends in middle school are hanging out and having fun. One of your friends mom shows up and sit next to you guys. Suddenly you can't talk about 80% of the stuff you'd in absence of her, even though the mom isn't spamming or trolling. But yes as network grows it attracts marketers and spammers. But also kind of audiences matter too. A large network of only consisting hardware enthusiast is really useful. But a large network of general population would affect what posts make it to front page, how they get reported, and how slowly they get answered as they will drown against cat photos, political rage, and personal success stories. Even people with all specialized skills and relevant interest won't get to see those niche posts.

On reddit there is concept of subreddits. But regardless you are more likely to be distracted with other subreddits then interact with niche you are an expert in. why more coding questions are asked on stackoverflow than r/webdev

Apple, the community has gotten better as it's gotten bigger.

But generally speaking it's hard for a community to get better as it grows. As the community grows it begins to split because there are so many needs to satisfy so an overall feeling of dissatisfaction dominates and people become unhappy with what the community has become. We see it all the time. In extreme examples members are willing to destroy the community with out knowing how to make it better. They are just upset that what they have is not what they want. In a way they unite on the idea that they are dissatisfied. It's extremely hard to satisfy everyone all the time. And as a community grows that becomes even harder.

One way to keep unity is to have a set core of believes and unite around them by making sure everyone adheres to them. So the community focuses on the believes rather than the reduction of satisfaction.

Some thoughtful comments in this thread so I would like to add something pithy and under-appreciated: once you reach a certain number of users, content moderation is the only thing that matters; everything else is ui chrome.
The present is never what it used to be. We remember the good and forget the bad.

Its why, make X great again is such an effective propaganda slogan (its been used by many groups, not just the current one)

As per my mum's fridge magnet:

"the older I get, the better I was"

I see this over and over again. I think people see the money and the monetization inevitably degrades the quality.

I'm attempting a web 1.0 business experiment with a website targeted towards finding unique stuff in the city I live in. I've decided, as a philosophy, that there will be no comment section with people bickering to moderate, no email signup, no real database, no login, no data collection on my users (besides whatever google analytics tracks) - but I personally don't want to handle your data. I guess this is all to say, I'm going to see if I can avoid falling down this rabbit hole as the community grows - can I avoid ruining the website? I guess I'll see.

I think if you do it right you can monetize tastefully, but that formula is still a work in progress. I just have a sense its possible. I think most people just chase the money into oblivion trying to scale into huge companies mostly for ego? However, it's entirely possible to create little lifestyle businesses on the internet that bring in a decent salary, but don't scale to tens/hundreds of millions of dollars. I think it would be fun to see the web return to a less chaotic place.

I think the web is less chaotic now. I was extremely chaotic early on, and it was great and terrible. You had niches for everything, style was all over the place, people made things efficient in interesting ways and, of course, there were scams and spam and trash and bling.

Now the web most people 'see' is fairly standardised and curated. I mean, try searching for a good forum on a specific topic now; you get wordpress/medium blogs or a link to Discord/Twitter/FB. A lot of the unique and niche 'group interests' are now within the walled gardens of Facebook (+Instagram) and Twitter or Discord, which are basically not searchable from a general search engine query. Or they're in Reddit, the uber-forum that's at least still searchable. I think that's a problem.

I think there's a subtle issue here you've almost hit by 'people just chase the money into oblivion,' and I think it's this: they don't quite understand or appreciate the value their 'product' creates and the audience it is for. So they chase 'monetisation' as its own reward - ads, dark patterns, trying to reach an ever 'broader audience.' Which becomes much easier to compete against and they lost not just customer base but loyalty and recognition.

The Young Web was Creator Chaotic.

The Present Web is Marketer / SEO / Advertiser Chaotic.

There was a high diversity of original content, much of it neither monetised nor monetisable, in the early days. It wasn't necessarily high quality, but it was different.

Today, you can find (if you look for it) quality material, but it's drowned in absolute oceans and galaxies of crap. In the relatively early days of television, Marvin Kitman observed "On the TV screen pure drivel tends to drive off ordinary drivel." The Internet does this on steroids. It's a fundamental characteristic of mass media.

https://web.archive.org/web/20110706222108/https://projects....

I have only seen this effect with artistic products and true communities(As in, places where you know most of the people, and your relationships with others there are at least as important as the official goal of the group).

Technology does not have that effect, because machines aren't people. There's essentially nothing about Linux that I don't like way better now than when I started.

Lightweight tech may lose it's lightweight status, but it still runs extremely fast because of the optimization that "bloatware" usually has.

If people think it's gone downhill, then it was probably always as much of an artistic work as a technical one.

Hacker News isn't a specific tech project, and is closer to a real community, so in this case I would expect that it would go directly toiletwards if it got big.

I think the main factors are content overload and a small group of users that quickly ruin anything.

That group often isn't there at the beginning, because they don't start stuff(Making an effort is uncool), but they do like to show up and shitpost.

It doesn't take many people who really don't care, to turn a place into 4chan. Moderation can't even fix it, you just get kidz bop 4chan lite.

I'd argue that technology does have this effect as well, though it manifests differently.

Machines aren't people ... but people buy machines, or the services based off of them. And as these get increasingly complex, and the market grows, that market becomes less specifically skilled and discerning, more easily swayed by bogosity. Audiophile equipment and wine markets exhibit many of these characteristics, and are well-known case studies. Bicycles are another example. With digital computers specifically, Moore's Law helps offset some of the worst abuses, but the intrusion of mass-market crap still occurs, ironically all the more in more competitive and larger markets.

But with machines, it's offset by network effects and economies of scale, and the fact that the cheaper way is usually better by pretty much any technical metric(See: Quartz vs Mechanical).

You also get a demand that things become easy and reliable. Niche audiences are much more tolerant. They will fix things themselves and not complain, or even remember, because tinkering is so normal to them.

When the mass market comes they expect absolutely zero friction.

True audiophile equipment might have some problematic effect, but for even the high end consumer level, class-D basically obsoletes everything else, from tiny phone speakers to multi kilowatt rock concert gear.

Even large appliances, one of the only things that seem to have gotten less reliable, might be a win. Newer stuff is lighter and uses less energy, and costs less, so the money spent and environmental footprint probably isn't as bad as they say for most people.

Clothes seem to be very slightly less durable, and have microplastic issues, but a pair of shorts from Target can still last a decade or even more if you know any repair, and it's not like cotton is ecologically perfect either.

Food is really commonly cited, but I suspect it is easier than any time in the past to eat well. Whole grains weren't a mainstream thing until recently. Plant protein wasn't a thing. There was a long era of things like partially hydrogenated oils, and before that, there was just straight up contamination as an everyday concern.

I think a lot of countries that went through eras of ethnic strife or balkanization have positive associations with bigness. Yugoslavia being a prominent example. The US itself may be a pretty good example of a place that benefits from its bigness, openness and ease of movement and sheer scale. A lot of large scale industry which underpins much of the modern world is really located in places that have the capacity and population to pursue big projects.

Within online communities that are dying there is often new life injected if they consolidate. I think the success of Linux is largely owed to big organizations that made it commercially viable. In decentralized form in something like Debian, which aims to reach as broad a base as possible, or corporate in the form of Redhat, but in each case with a growing population, real resources and unified goals.

A company like Amazon during the pandemic is I think also a good example. The logistics that their size enables and the ability to absorb sudden shocks just does not exist at any small company, and it was the big companies that kept the lights on and the goods going around. I was strongly persuaded by Tyler Cowen's book on the topic a few years ago[1].

[1]https://us.macmillan.com/books/9781250110541/bigbusiness

(comment deleted)
It's true for countries so I would guess it's true for all organizations.
I used to think this was inevitable, but as I've aged I have come to view the process differently.

When you join that group, you change the group. So it's a small shift whenever somebody joins. And even without a change in group membership, people change and their interests and time commitments change.

There have been many online groups that I have been a part of, that have not grown, and still gotten worse. Usually because somebody I liked became less active.

So the constant is really change. And most of us don't like change much. Sometimes change is better, that's why we stuck with the group when we joined it.

There's a pretty interesting phenomena in life that rates of loneliness tend to be vastly higher in urban areas than in rural. [1] It makes absolutely no sense on the surface. How can a town of 1000 people have a lower rate of loneliness than a city that has several orders of magnitude more people per area?

You're definitely right that as new members join a group, the mean interests of that group change. But you can't discount the average weakening of social ties. When there are 5 people in a group everybody is going to know each other extremely well. When there are 50,000 you'll have no clue who the vast majority are and respond accordingly. When you get into the millions everybody else may as well be a one-off chatbot. Unless you purposefully create a group within the group (which is really just starting the whole process over again), your odds of seeing the same individual twice approach zero.

[1] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7012443/

You know that the entire purpose of HN from day one was to advertise YC funded startups whose entire purpose of existing were to get acquired?
"Good online communities die primarily by refusing to defend themselves.

Somewhere in the vastness of the Internet, it is happening even now. It was once a well-kept garden of intelligent discussion, where knowledgeable and interested folk came, attracted by the high quality of speech they saw ongoing. But into this garden comes a fool, and the level of discussion drops a little—or more than a little, if the fool is very prolific in their posting. (It is worse if the fool is just articulate enough that the former inhabitants of the garden feel obliged to respond, and correct misapprehensions—for then the fool dominates conversations.)"

https://www.lesswrong.com/posts/tscc3e5eujrsEeFN4/well-kept-...

The fool is me. I am the fool.
In this corollary, we are all the fool.
(comment deleted)
I find myself more and more in favour of gatekeeping/keeping a low inflow of new people.

Too tired of the "include us -> we demand change -> we demand you be kicked out -> build your own place" cycle.

I used to be very against any form of gatekeeping. And lost a few really nice communities through that cycle.

I once heard that you're the average of the 5 people you spend the most time around and the older I get the more true that rings. I try to be _really_ particular with the communities I join and I have _no qualm_ removing either people from my communities or myself from theirs if I don't feel like we're helping each other; or more specifically if _I don't feel_ that _I am growing_ in the way _I want to grow_.

We should be kind to each other, for sure, regardless of what _Group_ we're in. Everyone should have equal access to their needs and desires. But. I am not _obligated to allow you to influence me_.

I once heard that you're the average of the 5 people you spend the most time around

It's also "you are your friends". If you're normally a mild-mannered guy that starts hanging around belligerent unscrupulous types, well, to outsiders you're one of them.

>…5 people…

i must be really unique ._.

>Too tired of the "include us -> we demand change -> we demand you be kicked out -> build your own place" cycle.

It reminds me of a modified version [1] of one of the Webcomic Name comics [2]:

grey blubs: you do not fit here

pink blubs: okay we will make our own place

grey blubs: why are you excluding us?

pink blubs: oh no

grey blubs (inside the space pink blubs just built): you do not fit here

[1]: https://twitter.com/reactjpg/status/1272042422340669440

[2]: https://webcomicname.com/post/185588404109

I’m strongly in favor of gatekeeping. I know that’s a bad word to some but that’s how you retain focus and purpose. It used to be the “normies” that you’d shield your group from, now it’s the “normies”, griefers, and the perma-offended.
Geek Social Fallacy #1: Ostracizers Are Evil

https://plausiblydeniable.com/five-geek-social-fallacies/

I am not native English speaker but for me ostracizes are evil and ostracizing has really distinct feel to it.

Not accepting someone into group for me does not fall under 'ostracizing' - for me ostracizing is not accepting someone into the group and making such person feel worse and even feel attacked.

Not accepting Joe Badbreath to the "Fresh Teeth" group and letting him know "Hey Joe, you don't belong here because X" for me is not ostracizing.

Not accepting Joe to the group by "we don't accept smelly people here, go away you XX" and then mocking smelly people in the group regarding them as lesser people. - that is ostracizing for me.

I see this cited all the time like the bible. Keep in mind, the internet and the earth by and large is itself a community, and its not moderated nor defended except in places like north korea or china.

Besides those places that are "defending themselves" the community is very healthy.

Follow news/current events more closely (not just from MSM sources)
It’s tragedy of the commons. The smaller the group the more likely members are to care for one another and the community. The bigger it gets, the less likely a new member is to behave with the culture of the community without moderation, the more the average behavior goes down. It helps if you have an on boarding process that educates on the culture and norms or attaches new members to existing so they can be introduced into the culture instead of just thrown into it.
I believe that if a community grows big enough it gets ruined, but “enough” may be bigger than you think.

> Have you ever seen an example where anything became better than before when it grew big.

Yes, many times.

When your community is too small it’s boring, there isn’t enough user-generated content. As the community grows bigger users produce more content. Popularity encourages creative people to join and existing members to put more effort into their work (motivated by a larger audience and more competition), creating better content.

I think Geometry Dash and Trackmania are examples of communities which seem to be doing better than ever despite growing a lot the past couple years.

The issue is, when a community grows it creates disagreement: some users like different content than other users, users start to fight over which rules / goals / overall direction the community should go. Usually the overall community ends up in the middle ground, where everyone is only partially satisfied.

Case in point: Hacker News with informative / political articles. Some people only like learning, some people like tech drama and even general politics. The result is half informative, half opinionated pieces on the front page.

But it helps when the community focuses on a niche topic, and sticks to that topic even if it grows. Because that means everyone just talks about the niche, and people who aren’t and don’t get interested in it won’t join. It also helps when said topic is non-controversial and non-political, so there’s not much to disagree on and get mad about.

Trackmania’s community is still close because it is a very specific game: racing on a custom track to get the best time possible. There’s not really much else to do in Trackmania, so if you don’t like making custom tracks, trying to get the best time on one of them, or watching people do those things, you won’t like Trackmania. It’s also clearly not provocative.

Hacker News is kind of a niche because it focuses on tech from the perspective of professional software engineers. Nowadays Hacker News does get controversial, but I know it has systems and moderators in place to limit flame wars and politics as much as possible.

Large subreddits, Discord communities, Facebook groups don’t really feel like “communities” because the users’ interests are too diverse: many of the posts are uninteresting to many of the users, because it’s hard to imagine a post which can interest a majority of the users at once. They also get a lot of drama because people post about politics and those posts get encouraged and upvoted and reposted.

Yeah, it's generally called ["scalability"](https://en.wikipedia.org/wiki/Scalability ).

For example, you can't generally scale-up a machine by just multiplying all of its dimensions by, say, 2, and expect it to still work the same way. Ditto for organizations.

Scalability would generally be a problem even if you could ensure that the sorts of people involved wouldn't change. But, if you're considering a scenario where the the types of folks involved also change, then that'd probably tend to amplify the effect.

That said, systems can often be scaled-up with due consideration to how they work and ensuring that the fundamentals are kept.

If you have a stable community, there is a certain distribution of participants from recently-joined to oldtimers. The bulk will have experience with the community's unwritten rules due to experience; new folks constitute a tiny minority and and "infraction" of theirs can be gently corrected.

This no longer works when suddenly scaling up participants. Behaviour by inexperienced members goes uncorrected and drowns out the original behavior. Aspects that were frowned upon can become the new standard. In short, the atmosphere changes - and no one genuinely controls the change's direction.

There's a similar essay that describes how scenes (e.g., art, music, literary, ...) develop.

First you've got the creators themselves.

Then the early / appreciative fans.

Then come the hangers-on. Not there for the creation so much as the crowd.

It goes downhill from there: grifters, frauds, pickpockets, exploiters, etc.

Eventually, the creators get bored, or tired, or can't afford the now-gentrified prices / location, and move on. The remenants of the scene itself can persist for decades --- the Haight Ashbury in San Francisco is one example, and downtowns throughout the world are littered with the dried husks of former literary circles and the like, hoping to catch a stale whiff of the fragrance that once blossomed there.

I wish I could find the essay, it described the dynamic really well. I'd seen it online ~5--10 years ago, believe it was making the rounds at the time.

I've thought about this a lot. The totally unscientific conclusive I've come to is that it isn't about scale per- se but about the money and greed that tends to come with that scale.

As Acton once said[1], "absolute power corrupts absolutely".

There's something to be said for small, and there's something to be said for niche too.

[1] https://oll.libertyfund.org/quote/lord-acton-writes-to-bisho...

Money usually optimises for advertising, advertising optimises for reach, and reach is the opposite of exclusivity or refinement.

There's some benefit to some selective markets, especially if they tend to focus money more than brains --- this is the notion behind virtually all luxury or high-end products, and was a role served by magazine publishers in the last quarter or so of the 20th century: a clear indicator of market segmentation and focus, combining both the magazine's own audience bias as well as geographic (and hence, socioeconomic) market differentiation. That's now largely moved to online and mobile.

My take is, if a community is constrained by quality (eg moderation, self-selecting invite-only etc) then the only way it grows is by lowering the threshold. Inevitably that means lower quality content.

To some extent, more people can make up for it. Eg if I go from 10 excellent artists to 1000 good ones, chances are that the top 10% artwork created actually gets better.

But eventually if you grow by lowering quality, then, well, quality drops.

I suppose for very small societies, they may be limited by discoverability/cliquiness and not quality, so their growth doesn’t mesh with quality and so they could also get better with size.

Note, “quality” doesn’t have to mean good/bad but also just “property”. When Facebook started, it was for kids from elite schools. It then gradually diluted that by lowering that particular bar. Then it was for kids from all schools. Then young people. Then their parents too. Clearly, it’s far from dying in absolute terms, but it’s certainly no longer what it initially was. To many initial users, it’s as good as dead though.

This actually harbors a good point. The quality stays high if the interactions users receive are strongly weighed towards the high-quality content/people.
Very true, but that mechanism in itself is extremely difficult to scale.
But with traditional social media structures, as the user group grows, the quality of voting/interaction suffers - you get more people willing to like/upvote memes, clickbait, and controversy.

Maybe what we need is more media/discussion curated by people who care about quality instead of curation by the masses

I think HN fits this to an extent by weighting voting power according to account age and other factors, which would dramatically slow the speed with which an explosion of new users would change what is seen on the homepage. User comment quality remains a hard problem to solve though.
I find myself continually amazed at how HN continues to be one of the more overall generally "sane" discussion forums in existence. Still by far just about my favorite source of interesting links and equally interesting discussions about those links. "Kudos", "props", and "mad respect" at all those folks who help it stay that way.
There's another side effect: Whenever a site or community grows, it becomes a more and more attractive target for bad actors. The site finds a way to separate signal from noise, this attracts an audience, and that attracts bad actors who learn to mimic the signal in order to access the audience for their own gain. Unless the site finds a way to expand whatever it did in the first place to isolate signal from noise, to also isolate signal from mimicry, then the site will go into quality decline.

We've seen it on Amazon with fake reviews and a flood of cheap crap, we've seen it on Facebook with clickbait, bots and manufactured outrage being counted as "engagement", we've seen it on Etsy with cheap crap passed off as homemade crafts, we saw it with StackOverflow-copying SEO-spam on Google, and just blogspam and SEO-spam in general. Whenever there's a commonly-relied-upon signal, there's someone trying to mimic it, thus lowering the value of the signal.

StackOverflow is still pretty good.
> StackOverflow-copying SEO-spam on Google

I believe the parent commenter did not mean that StackOverflow itself became bad, but rather that its content gets copied and cloned by bots and posted as much lower quality content on Google.

So I guess the critic goes to google content filtering algorithms then.

It’s an interesting case.

Quality overall dropped somewhat over they years (my subjective impression) but they grew by expanding to many different niches. They also skillfully connected them, so that each one feels like a tight community, yet easy to join.

> Whenever there's a commonly-relied-upon signal, there's someone trying to mimic it, thus lowering the value of the signal.

Goodhart's law: When a measure becomes a target it ceases to be a reliable measure.

The other day someone was lamenting the disappearance of the downvote indicator from YouTube videos, which makes it impossible to use an up/down ratio as heuristic for quality. Sometimes the measure is so good that it's the custodians of the community themselves that become bad actors.

The OP seemed to be speaking more broadly about any community being able to grow without ruin, and there are plenty of examples of communities that grew and improved in quality for arbitrary amounts of time. When we talk about online, fast growth, low-indoctrination, easy-to-join communities (i.e. they grow from without vs. within,) those are prone to the eternal September effect and to losing/changing identity. There are all sorts of circumstances that can effect a groups growth dynamic, like how hierarchical it is, how communications are prioritized and presented, etc.

I think fast growth and low barrier to entry are a recipe for becoming a microcosm of general human behavior/cooperation issues, but that there are mitigating factors that may allow it to work better or worse.

Facebook was once Literally Harvard. It's a great many things now, but one thing it is not any more is "Literally Harvard". It's now 3 billion+ people, few of whom attended said institution or anything comperable.

Suppose, as a thought experiment, you could create the ideal, perfect, social network or discussion board. Say, with 40 of the smartest, most creative, quirkiest, considerate people you knew. Hell: the 40 top exemplars of this on the whole planet. It would be a pretty awesome network.

(I know this because I accidentally created something like this, just by creating a small group with smart and interesting people in it. It really was surprisingly good.)

It can only get worse.

Because if you've already got the best, then anyone else you can add will be less smart, less creative, less quirky, less considerate, than who's already in the group.

And at some point you'll notice. Maybe at 50 people, or 500, or 5,000, or 50k, or 500k, or 5m, or ....

For a few reasons.

- Gradation of capabilities. These are ordinalities, not cardinalities.

- Limits to common experience and interest.

- Differences of opinion. Or morals. Or philosophy.

- Just plain scale.

https://mastodon.cloud/@dredmorbius/1058991

And many new communities don't start out as highly-selective. There's something of a double-downward-wedge at play:

- If a community starts out selective and grows, it can only dilute the original cohort.

- If a community starts out antisocial, even slightly, it has a profound tendency to drive off the more pro-social members with time, what's been called "the evaporative cooling effect", or the Nazi at the Bar problem.

https://web.archive.org/web/20101012105003/https://blog.bumb...

https://web.archive.org/web/20101126001133/http://lesswrong....

https://old.reddit.com/r/TalesFromYourServer/comments/hsiisw...

The situation also appears with specific channels or publications. TLC was once the PBS-affiliated, NASA-sponsored The Learning Channel. H.L. Mencken's American Mercury was once a highly respected literary magazine. Both transformed tremendously. You're likely aware of TLC, the Mercury's story is probably less known today:

https://en.wikipedia.org/wiki/The_American_Mercury

There are communities that do remain reasonably coherent over time. Most of them are size-constrained, many cycle through members. Universities and colleges are classic examples of these. Most of their members, the undergraduates, remain with the institution for only a few years --- graduating in 4 or 5 typically, though many don't graduate (drop-out rates may approach 50%). Staff and faculty tend to remain longer, and provide institutional memory, though the institutions themselves provide some of that robustness as well.

There's much made of the failure of planned utopian communities, though it seems to me that the archetypal college town often strongly resembles one, and many of these have persisted for a century or more, which is longer than most other planned communes. (There ar...

I think it happens even with out the growth in community size. Many companies perish, many groups of friends disband, rare bands last for decades.

People change and situation changes.

What happened to the Ask HN "tag"? Do people just not use it anymore to highlight it's not a link to another website?
Man, all these new people on HN have ruined it. No one respects the old rules anymore :)
I've seen dozens of examples of this, but I'm still hesitant to brand this to be causality. There seems to be some degree of correlation though.

Smaller communities tend to be more familiar - people recognize each others names, and people have each other's backs, when someone is trolling or something. When things grow beyond a certain size - maybe related to Dunbar's number - the group dynamics change.

In some cases this can lead to the community to loosing coherence or even becoming toxic - but I don't think that's inevitable. I believe it IS possible to grow a community to a larger size and have it stay nice. I think though, that in order to keep a community nice when growing beyond a certain point, some effort is required - effort which wasn't necessary while the group was smaller and kinda self-organized.

Also, growing slowly rather than quickly might help - as newcomers have some time to acclimatize and internalize those unspoken social rules that govern a group's dynamic - and will be able to pass on the knowledge to those coming after. People who join a group will eventually adapt to the group - but that process needs a bit of time. But when growth is too fast, a newcomer might have more interactions with other newcomers rather than long-standing community members, and thus will adapt to something quite different.

> Smaller communities tend to be more familiar - people recognize each others names

It feels like there's a certain number (maybe Dunbar's like you said) at which people stop seeing a community as a group of disparate individuals and start seeing it as some sort of a collective hivemind.

You see this regularly with comments like "HN/subreddit/etc is so hypocritical. One day they're in favor of X, the next day they're against it", in which the poster seems to fail to realize that in a community of tens of thousands of people, chances are it's entirely disjoint subsets of the group taking those positions.

I don't see that kind of thing as often in smaller message boards. When you recognize everybody's name (or at least their avatar), it's a lot clearer that it's just Bob and Alice who support X and Eve and Mallory who don't.

It seems natural that such a failure to see the individuals that make up a group would lead to a decline in civility.