How Facebook Powers Up Angry Birds, or Enter the Birdquake

Rovio's smash hit Angry Birds is coming to Facebook on Tuesday, but it's not making it to the world's largest social network without getting some community-aided enhancements. Play well with others and you could earn one of the four brand new power-ups that make the Mighty Eagle look like ... just the Eagle. » 2/09/12 7:30pm 2/09/12 7:30pm