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For the first time, Facebook has revealed details about how it tracks users across the web.

Through interviews with Facebook engineering director Arturo Bejar, Facebook spokesman Andrew Noyes, Facebook corporate spokesman Barry Schnitt and Facebook engineering manager Gregg Stefancik, USA Today‘s Byron Acohido was able to compile the most complete picture to date of how the social network keeps tabs on its 800 million users.

Read the rest of the article on Mashable.com.