What Are The Most Interesting Social Elearning Startups?

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What are the most interesting social elearning startups?

At the moment, and at the risk of sounding cheesy, I might say that the answer is Quora. It has simply been blowing up lately. It'll no doubt be fascinating to see where it goes and how it goes there. For example, Quora may take a Twitter-route to its product growth in that it will be guided more externally - by the actual users - than internally.

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