Massive-scale online collaboration | Luis von Ahn

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http://www.ted.com 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.

TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes. Featured speakers have included Al Gore on climate change, Philippe Starck on design, Jill Bolte Taylor on observing her own stroke, Nicholas Negroponte on One Laptop per Child, Jane Goodall on chimpanzees, Bill Gates on malaria and mosquitoes, Pattie Maes on the “Sixth Sense” wearable tech, and “Lost” producer JJ Abrams on the allure of mystery. TED stands for Technology, Entertainment, Design, and TEDTalks cover these topics as well as science, business, development and the arts. Closed captions and translated subtitles in a variety of languages are now available on TED.com, at http://www.ted.com/translate

iFaith 1.4 – Downgrade iOS 5.0 and Save SHSH

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Download: http://ih8sn0w.com

In this video I give a tutorial on how to use iFaith 1.4 to downgrade iOS 5.0 and iOS 5.0.1 to earlier firmwares and save SHSH blobs to use on your iPhone, iPod touch and iPad. iFaith 1.4 is Windows only and support the iPod touch 2G, iPod touch 3G, iPod touch 4G, iPhone 3GS, iPhone 4, iPad 1 and Apple TV 2. iFaith does not support the iPhone 4S and iPad 2.