Usernames

Many websites prohibit misleading usernames that imply an official role on the website such as "admin," "administrator," "webmaster," "system operator," "sysop," or "moderator."

Can usernames be changed?

They found players whose username included some kind of profanity or other crude words or phrases were also more inclined to be more antisocial in their game-play interactions with others than those with rather benign usernames.

On the other hand they also found that gamers with more positive usernames tended to have positive in-game behavior, which they say could correlate with positive personality traits in the real world.