Facebook: Privacy rights are double plus ungood

After intense criticism, Facebook publicly claimed they would allow opting out of their controversial Beacon system to sell web surfing information to advertisers, but Internet experts discover that the system still tracks users movements even when Facebook is off line.

Beacon will report back to Facebook on members' activities on third-party sites that participate in Beacon even if the users are logged off from Facebook and have declined having their activities broadcast to their Facebook friends.
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"It can happen completely without their knowledge, unless they are examining their network traffic at a very low level," Berteau said.