10. Lady Gaga

She may have won a few Grammys, gone platinum and had one of the greatest albums of our generation, but Lady Gaga recently hit it big -- really big -- where it matters most -- on Facebook. Just a few weeks ago Gaga hit a major cyber milestone, reaching 10 million fans on Facebook, coming second only to Michael Jackson. Add that to her 5 million plus Twitter followers and, well, that's a whole lot of little monsters.

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