Yovisto is a new video search engine for educational videos and e-lectures. yovisto provides a social tagging function. You can sign up at yovisto and maintain your own online lecture collections, maintain an own user profile, make friends, choose your favorite video lecture, share lecture recordings and (!) you can tag videos.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is. (John von Neumann)
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