If I'm not wearing my headset and someone else is, they usually refer to me as "He" (or "Homeboy" if they're the type that talks a lot and loud) no matter what. I haven't had anyone assume I'm female for a long time. Though if I were ever to play a MMORPG I would totally pick a girl and act like one so the men would be nicer to me and give me things. I'm not above it.