I just want to add that my 16 year old son got very addicted to this game. It was like heroine to him. If I took it away for him missing school or bad behavior, his hands would start shaking and he'd become agresive.
For years I tried to understand his love for the game and how he had these "real friends" on the game... but once he ditched looking for a job due to this game, I took it to a pawn shop and bought him a car to go to school and work. Goodbye rusty.