FILE - In this Dec. 13, 2011 file photo, a sign with Facebook's "Like" logo is posted at Facebook headquarters near the office for the company's User Operations Safety Team in Menlo Park, Calif. Celebrities, businesses and even the U.S. State Department have bought bogus Facebook likes, Twitter followers or YouTube viewers from offshore "click farms," where workers tap, tap, tap the thumbs up button, view videos or retweet comments to inflate social media numbers. (AP Photo/Paul Sakuma, File)
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