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"Facebook does not track users across the web," - A Facebook spokesperson on September 25, 2011

and

"Generally, unlike other major Internet companies, we have no interest in tracking people." - Facebook employee on September 25, 2011

v.

"A method is described for tracking information about the activities of users of a social networking system while on another domain." - Facebook Patent application dated September 22, 2011

Whoops

.