Quote Originally Posted by mossyoak View Post
Also what if one John wanted his name to be John but it wasnt availeble and he just put john2 you no. and so on
They don't go by the names alone. It's a combination of everything from player name to city name to emails and IP addresses, etc.

It's just that when someone chooses to flaunt their multi-accounting like that, it's easier to spot them.