Originally Posted by Laz
i have no idea, i really haven't explored that part of the game yet.
i know you can 'friend' people and then a little popup tells you that a friend is online and where the friend is
iirc with Diablo II you only 'friended' a specific character, not the total account ... this might be the same way.
You friended accounts in Diablo 2, not just a character, unless they changed it since I've been playing.