[Wikimedia-l] Editor retention (was Re: "Big data" benefits and limitations (relevance: WMF editor engagement, fundraising, and HR practices))

[Federico Leva (Nemo)]

Nikola Smolenski, 08/01/2013 13:10:
>> In general, as far as we know captchas are currently not stopping
>> spammers at all, while effectively stopping many legitimate (less
>
> Care to elaborate? Do we know how are spammers avoiding captchas (by
> software or by humans)? How come other websites don't have this problem?

Are you kidding? All MediaWiki websites suffer from the uselessness of 
its captchas.
For additional information please refer to the discussions linked from 
https://www.mediawiki.org/wiki/Requests_for_comment/CAPTCHA and others 
on wikitech-l.

Nemo