reCAPTCHA
Via Tikirobot, reCAPTCHA. Brilliant:
Over 60 million CAPTCHAs are solved every day by people around the world. reCAPTCHA channels this human effort into helping to digitize books from the Internet Archive. When you solve a reCAPTCHA, you help preserve literature by deciphering a word that was not readable by computers.
Why didn’t I think of that?
Joey Hess May 24
Nice idea, but it uses javascript. Sighugh.
Chris Lawrence May 24
It looks like there’s a NOSCRIPT alternative; I suppose the truly paranoid could just use the NOSCRIPT version, albeit with potentially a bit less security.