Luis von Ahn, one of the creators of reCAPTCHA, has a fascinating project going: http://duolingo.com/ http://duolingo.com/ The idea is to teach people languag

Luis von Ahn, one of the creators of reCAPTCHA, has a fascinating project going: http://duolingo.com/ http://duolingo.com/ The idea is to teach people language at the same time as providing a real time translation service. Apparently if you multi-plex novices (and not at a bad rate) you get expert translation at a similar accuracy. The translators benefit by learning language, and the service is self supporting by proving translation. He did an excellent TED talk on the subject: http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html http://www.ted.com/talks/luis_von_ahn_massive_scale_online_c...