Chairman, Wikia
Age: 40
While most people think of him as Mr. Wikipedia, Jimmy Wales doesn't plan to be a one-hit wonder. He's turned his attention to Wikia, a separate company that aims to take the wiki concept into the for-profit world. Age: 40
Wikia, backed by more than $14 million in venture capital, including $10 million from Amazon, is starting with a collection of advertising-driven community sites and has plans for a user-created search engine.
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