Games Use 'Skinner box' methods to addict you

http://www.cracked.com/article_18461_5-creepy-ways-video-games-are-trying-to-get-you-addicted.html

If you've ever been addicted to a game or known someone who was, this article is really freaking disturbing. It's written by a games researcher at Microsoft on how to make video games that hook players, whether they like it or not. He has a doctorate in behavioral and brain sciences