For PewDiePie, the new bros just keep on coming. The Swedish game-loving, f-bomb-dropping comic personality added more YouTube subscribers in 2013 than anybody else—including Miley Cyrus, One Direction or Rihanna. PewDiePie is a true Web phenomenon. His channel passed YouTube vets Smosh back in August, hitting 12 million subscribers. As of today he has 17.8 million. Music artists were among the top gainers this past year, according to YouTube's data. Rihanna's Vevo channel was the third biggest gainer, OneDirection fifth, and Eminem 10th. But it's interesting to note that on Y...
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