Founder, Mahalo
Age: 36
An early Internet pioneer, Calacanis bet on the business of blogs long before most people had even heard of them. In 2003 Calacanis founded Weblogs Inc., a network of some 90 blogs inlcuding Technorati's No. 1-rated blog Engadget, which sold in 2005 to America Online for a reported $25 million. Now he's aiming to "obsolete" current search engines with Mahalo, a website that encourages users to contribute appropriate links for search queries. Age: 36
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