[xwiki-devs] CAPTCHA module investigation

Hi devs, We have been getting reports recently of people getting a lot of SPAM in their public XWiki instances, even if they had the CAPTCHA module [1] enabled on their comments/registration pages. These past 2 days I`ve been investigating the current status of the CAPTCHA module and what is the state of the art in fighting SPAM. I have produced the following document [2] that I would like you to have a look at and tell me what you think and/or what is your experience with XWiki's CAPTCHA module and with fighting SPAM in general. TL;DR: I would like to propose that we move to Google's new NO CAPTHA reCAPTCHA as the default CAPTCHA solution and that we implement a configurable back-end that allows admins to easily switch between CAPTCHA engines/services. Thanks, Eduard ---------- [1] http://extensions.xwiki.org/xwiki/bin/view/Extension/Captcha+Module [2] http://design.xwiki.org/xwiki/bin/view/Proposal/CAPTCHAinvestigation70