On Fri, Jul 5, 2013 at 5:42 PM, Denny Vrandečić < denny.vrandecic@wikimedia.de> wrote:
Wait - removing the captchas lead to a decrease of reverted edits in terms of absolute numbers? Woot? Anyone has an explanation for that?
Maybe a CAPTCHA is effective at demotivating bona fide editors and motivates vandal, which vandalize as a revenge for the CAPTCHA? That would be interesting :) Marco