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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Awesome!
Comment by Spiritual Hawk on December 25, 2011 at 7:36pm wow that makes all the problems i had with captcha worth the very long time i spend trying to see what they want me to type thanks for sharing that
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