(01-13-2011 07:16 PM)ZiNgA BuRgA Wrote:  You'll probably end up getting a bunch of "fake" claims from people who are being targeted by Indian spammers or other systems which use humans to solve these puzzles.

You do not know how this (btw legitimate and big) business works. Human solvers do not directly interact with web resources being cracked (in order to be legitimate, cheap and automatizable).  
KeyCAPTCHA can't be re-transmitted to 3d parties.  

(01-13-2011 03:29 PM)Banalyst Wrote:  reCAPTCHA.  They don't change it because they don't need to.  But as it's hosted remotely, the capability is certainly there.

reCAPTCHA was changed and many times but they cannot conceptually (due to their biz model and technical platform)  change its type and prevent spambots massively passing through it
Just google for "recaptcha cracked" for the last 3 days

Update:
"In fact, it [reCAPTCHA] became pretty useless on 4 January [2011] when spammers apparently got their collective hands on a piece of software that circumvents reCAPTCHA and allows for a fully automated registration process. The bots have been busy, very busy indeed, ever since"

Read more:
vBulletin forums hit by reCAPTCHA cracking spam bot | PC Pro blog http://www.pcpro.co.uk/blogs/2011/01/12/...http://www.pcpro.co.uk/blogs/2011/01/12/vbulletin-forums-hit-by-recaptcha-cracking-spam-bot/?DCMP=NLC-Newsletters#ixz