Yeah, that's happened to me. I just started up a new character. I chalk up the running off to not knowing how to play the game and not communicating to not understanding the /group or /general /say commands.
Also consider language barriers, etc.
Also, I sometimes make judgments on whether I should help a new player by their name. Anyone else do that?
I've never though to do that, but I see the bases of your reasoning. Your more likely to get an imature attitude with some one with the name of "Myhotdog" (and Ive seen it used) than someone that looks like they put a little though tbehind their toons name.