Angry Birds Game for Facebook launched now. After much wait about its release, It was launched on Valentines Day. Rovio released the Angry Birds Game  as an app so users need  to give permission to launch the game. The game has all similar features that were found in mobile, PC and Chrome Version. Angry Birds on Facebook has four different power-ups ( Super Seeds, King Sling, Sling Scope and Birdquake). We can get...