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May 14, 2012 in Business, Nation/World
AP/Paul Sakuma, File photo

In this Sept. 22, 2011 file photo, Facebook CEO Mark Zuckerberg, left, watches comedian Adam Samberg, right, of Saturday Night Live, gesture during the f/8 conference in San Francisco. Zuckerberg turns 28 on Monday, May 14, 2012. He’s considerably younger than the average FORTUNE 500 CEO, of course. But while some investors worry that Zuckerberg is too young to lead Facebook as a public company, experts point out that Bill Gates, Steve Jobs and Michael Dell were in their 20s when their companies had IPOs.