Occupation: Blog director
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At 19, Cashmore started Mashable.com from the basement of his parents' home in Scotland. Just five years later, it has become one of the Web's most popular blogs, attracting some 10 million visitors a month. Cashmore now directs a staff of writers relentlessly covering the growth of the social Web and sites like Facebook, Twitter and Google. It doesn't hurt that the sartorially impeccable Scot is often the public face of his company online he's the Brad Pitt of the blogging set.