Stop Facebook from tracking the webpages you go to.
Facebook is notified whenever you visit one of the more than one million sites on the web that use Facebook Connect and has a history of leaking personally-identifiable info to third parties.
Turn off the flow of your data to them!
Facebook Disconnect blocks all traffic from third-party sites to Facebook servers but still lets you access Facebook itself.
Note: Read the FAQ at http://j.mp/fbdcinstall to learn about the warning you get when installing Facebook Disconnect.