There's a blogpost here: [Only registered and activated users can see links. ]
Or the longer(but worth-watching) TED talk here: [Only registered and activated users can see links. ]
But basically, those re-catchpa things you often have to fill out to sign up for things or fill in forms on the web? There's one word that is a security word and the other word is from a book. If 10 people get the security word right and the same translation of the word, they can be sure it's accurate. This way they digitize 100 million words a day. My mind, blown.
The Following 5 Users Say Thank You to IndigoSunset For This Useful Post: