There's an interview on Ten Ton Hammer with Dr. Hilarie Cash, co-founder of the reSTART Internet Addiction Recovery Program to learn more about how game addiction and rehabilitation is supposed to work. Perhaps not surprisingly, Dr. Cash thinks such addiction is widespread, estimating just under one in twelve kids is an addict: "Well, in the US the most recent research is suggesting that addicted video game players range of about 8.5% overall of kids between the age of 8 and 18; they meet the criteria for addiction." I don't know, she's no Dr. Phil.