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Another awesome language learning project by Luis von Ahn (inventor of reCaptcha): http://www.duolingo.com

Check out his talk from TEDxCMU: http://tedxcmu.com/videos/luis-von-ahn

Do you have access to the product? I am very curious. The presentation demo looked intruiging, but also limited to text which doesn't sound like fun. What is the product like? Have you been using it? I was worried that it was vaporware.

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