Facebook's Beacon is evil
Facebook's Beacon program, where Facebook's partner sites automatically report your activity on their sites to your Facebook account, doesn't pass my smell test. What Facebook has built in Beacon is spyware. If Facebook doesn't redesign Beacon and makes it opt-in and far more transparent than today, I will be very surprised if this leads to neither a member backlash nor regulation by lawmakers.
An example of how Beacon works: Click on Play Now and Joost will report your action to Facebook and unless you actively say no, your activity will end up in your newsfeed.