facebook game

Ever since I started facebook, I played various facebook games and they are all addictive. First one I was addicted to was tetris. It was not only fun but I was good at it so I couldn't stop playing it. When I turn on the compute I just play the game and try to stop, but after thirty minutes or so, i play again. It interrupts my studying so I really need to stop playing them. I even thought abou quitting facebook. But it is an important means of communication so i could no do it. I can keep in touch with people who I'm not close enough to call, and i can know about their lives. Good things outweigh bad things, so I can't quit facebook and facebook games.