Hot or not CAPTCHA
A while ago I wrote about CAPTCHAs – tests designed to prove that you're a human being, not a script running on a computer whose purpose is to flood your blog with comments advertising sundry undesirable wares.
I've just found a new one: Hot or Not CAPTCHA and it's astonishing: you're shown nine pictures of people (of the gender of your choice) and picking out the three, er, hot ones proves that you're human, not a computer. It's a mashup of the web site Am I hot or not?; it works by picking nine pictures from that site, six of which have been scored low and three of which have been scored high. You might think that there would be room for interpretation, that your choices might differ from the aggregate, but in my limited testing of it, I picked the intended three five times out of five. I'd be interested to hear if anyone (genuinely) fails the test by failing to identify the intended three.