I seem to have stopped form spammers from cluttering a business inbox. Have I set myself up for some more mysterious problem down the road? [more inside]
posted by fantabulous timewaster on Apr 3, 2008 - 12 answers

Kinda strange Wordpress plugin request: We're looking for a contact form with image submission that also employs a captcha or similar form of validation. [more inside]
posted by zenpop on Mar 5, 2008 - 3 answers

Is using a Latin-alphabet captcha accessible across languages/character sets? [more inside]
posted by soma lkzx on Feb 8, 2008 - 6 answers

With my last lynx cookie crumbs, I ask of thee...are there any text-browser compatible captchas? [more inside]
posted by nomisxid on Nov 8, 2007 - 11 answers

When you register as a new user on a site, often times you are presented with a graphic where the letters/numbers a blurred or distorted (to present bots from registering) and a box below it where you are supposed to replicate its content with keystrokes. What is that thing called?
posted by psmealey on Jun 13, 2007 - 15 answers

Is it possible to tell if other people are using votebots or scripts in an online contest? [more inside]
posted by clockworkjoe on Sep 27, 2006 - 9 answers