Tell HN: Don't forget to actually post

Offers are great (thanks, really), and sometimes it's more appropriate to explain with examples, or privately.

In many fields though you could get a much greater impact if you just wrote a post or even an ebook about what you know well and care about.

Application UX guidelines.

Rules for great newsletter copy.

How to create interactive visualizations with RaphaelJS.

Tools and frameworks for iOS game development.

etc.

A great (not yet another) post on any of these (example) topics will help a lot of people here on HN and elsewhere on the internet.