Not much use in PVE, but for PVP having names not starting in the same way helps alot. My chars are named Penotes Denotes Venotes and so on. When I enter a BG, no one will notice me. Most of the time they see me when 4 of my chars are already nr 1 2 3 4 in healing done so people can see I'm not just filling up spots in the raid, as I really add something to the fights.

And don't hide. Showing off in city's is a big part of the fun after doing an instance 8)