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January 12th, 2012 | by MiW

After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn explains how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately. Interesting use of ubiquitos CAPTCHA – implications for our profession that may be disquieting. Watch the video.

(via A Walk in the Words)

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