they don't go by accounts. they send something to every xbox. once its logged on it can no longer be acounted for. so if timmy signs on first, tommys sign on will not add another user. they did this awhile back when they said that they had 2 million users with the origional xbox. i believe it, considering how many xbox and xbox 360's there are out, and for the 360 you only need broadband.
Xbox Live members hit the 4 million mark
Oct 19th 2006 3:01PM (Joystiq)