It would be interesting to see the effect of captcha on signups (and not just comments). Also it would be good to know if re-captcha works out to be better (since it has audio support).
> It would be interesting to see the effect of captcha on signups (and not just comments).
Yes, I think that author fails to take into account that on certain sites a lot of spam would cause potential users to shun from even trying to signup.
After 3 months the CAPTCHA was switched to the other CAPTCHA setting. I recorded the amount of successful, failed, and SPAM conversions for each of the 50 web forms.
Wouldn't it be a better study if instead of doing the switch once after 3 months, captcha went on and off randomly throughout the 6 months?
After 3 months the CAPTCHA was switched
to the other CAPTCHA setting.
Wouldn't it be a better study if instead of doing the switch once after 3 months, captcha went on and off randomly per visitor throughout the 6 months? This would take away unintended effects on the study due to changes in traffic pattern over time.
Interesting read up, but graphs are seriously misleading. The first one being from 0-900 scale, and the next one a zoomed in 600-820. This really throws your off... took me a while to realize that the failures are actually a VERY SMALL fraction... (even after reading the percentages explained in text).
I saw a comment form recently where there was a field labeled 'Are you human?', if you enter 'yes' your comment is not marked as spam. I wonder how well silly but obvious questions, to humans at least, can stop spam? From a UX perspective it's slightly less effort than deciphering a CAPTCHA box. It's not as thorough a solution as CAPTCHA but is super quick to implement.
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[ 4.7 ms ] story [ 29.2 ms ] threadYes, I think that author fails to take into account that on certain sites a lot of spam would cause potential users to shun from even trying to signup.
Wouldn't it be a better study if instead of doing the switch once after 3 months, captcha went on and off randomly throughout the 6 months?
The quality of his captcha is also questionable, since it was apparently not recaptcha.