The Perfect Captcha: Hot or Not

[techpr]

Sure, Microsoft Research's spot-the-kitty game is a cute way to make people prove they're not bots (instead of making them read a twisted jumble of letters). But it's no match for the delightfully cruel Hot Captcha: Look at nine people, and pick the three hot ones.

More... (http://digg.com/tech_news/The_Perfect_Captcha_Hot_or_Not)