Behold: The One Letter Username Twitter AristocracySam Biddle1/19/11 11:00pm127EditInvite manuallyPromoteDismissUndismissHideGo to permalinkYou see this guy? Andrei? You see his smug face? Wanna know why he's so smug, aside from being a "beer lover and brewer"? His Twitter username is A. Just A. He is one Twitter's 26 alphabetical superstars.