Scammers, too (Karen Bleier/AFP/Getty Images)

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In the summer of 2010, Facebook users were lured into taking surveys, which allowed a rogue application to spam their contacts with URLs that tease "OMG! Shocking Real Crimes caught live on Google Streets!" Once clicked, users are then prompted to click a standard Facebook "request for permission" window, which in turn, spammed more friends. The scammers were paid for traffic sent to the advertised websites.

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