http://www.newsday.com/news/nationworld/wire/sns-ap-video-game-addiction,0,6985261.story?coll=sns-ap-nationworld-headlines There are some storties emerging that PC games, especially MMORPG's are becoming addictive, this is one of them. The effect is closesly tied with the frequency ranges of television screens and computer monitors, which around 70 hz can induce an hypnotic state. (at 60hz the refresh flicker is even noticeable) This is why people who are watching a lot of TV, often slump down in their chairs and become 'glued to the telly'.