Luis von Ahn: Massive-scale online collaboration http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html … #reCAPTCHA #disruption
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Luis von Ahn: Massive-scale online collaboration http://www.ted.com/talks/luis_von_ahn_massive_scale_online_collaboration.html … #reCAPTCHA #disruption