You choose your character's name per character when you create it. Why would you think otherwise? --- "A shouted order to do something of dubious morality with an unpredictable outcome? Thweeet!" My FC is in my profile.
lets say your account/site name is "Dudebro" then you make a character named "MLGsinper"
when people look at guild/friends list they will see "MLGsniper (dudebro.1234), the numbers are random and everyone gets them added to their names. this way you only add the person once, then you'll see them online no matter the character they pick/make --- nomnomnom
From my experience, people running around /saying will use your character name, of course. But in our guild, especially if someone swaps alts often, it is easier to just address members by their account name.
gah,,,,,,,,,,,,, if players can see my account name...me think me need to change it..lol... --- WoW: Talho #11 top warrior dps on 25 Saurfang and Festergut *WorldWide* and #1 world BPC, as of 4/7/10 http://www.wowmeteronline.com/rank/clazz/dps/war/9/0/3