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December 14, 2011

Best of TED - Luis von Ahn: Massive-scale online collaboration

For those of us who really hate Captcha, worth watching how this annoying feature is now improving the world. After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. At TEDxCMU, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately — all for free.

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