(story here). One MD (Dr. Maressa Hecht Orzack) suggests a number of 40% of users are addicted to Worlds of Warcraft. I am not sure that's right, but as she points out, if the number is even 10%, and there are millions of users, then WOW addiction is a huge problem. Some may argue that if it replaces drinking and drug use to get a high, then isn't that a good thing? I counter that the social harm is similar, but really who knows, there are no studies I know of examining this issue.