Umm, I probably shouldn't admit this, but I'm a PC game person and I spent a few years playing online games. I was one of those that did not get completely addicted to them. I found I really enjoyed them in the winter months when I didn't want to go outside anyway. :)
I've played a few of the facebook games-but when you can make a character do something you can see, like in the online games, it's tough to go back to the format in facebook where you click a button that says "fight!" and all you get is this message that says, "you hit so-and-so for 18 points damage". Kind of anticlimactic. :)