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http://www.pbs.org/wnet/need-to-know/culture/anti-social-behavior-the-facebook-exodus/3996/ People have been defecting from Facebook in record numbers, often citing privacy concerns. But removing all your personal information from the network isn't as easy as it seems. Need to Know airs Fridays on PBS. Watch full-length episodes of Need to Know at http://video.pbs.org/program/1458405365/

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