Luis von Ahn: Massive-scale online collaboration
http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html
Sent from TED iPad app
http://itunes.com/apps/tedconferences/ted
Regards,
Chih
Sent from my iPad 2
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Luis von Ahn: Massive-scale online collaboration
http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html
Sent from TED iPad app
http://itunes.com/apps/tedconferences/ted
Regards,
Chih
Sent from my iPad 2