They should make a button so you can tell a person that you are on the same account as another character. I have three characters on one account, and two are on the same guys friend list. I try to give him hints that the two characters are nplayed by the same person, but it's impossible through menu chat! It's really causing some some problems, because I log off one and onto another, I try to get him to do a quest with me and he says to wait for his friend, which is really my other character! :(