A look at some significant sports figures who use the social networking Web site Twitter, along with their screen names on the site:
Lance Armstrong, cycling: lancearmstrong
Ivan Basso, cycling: ivanbasso
Andrew Bogut, Milwaukee Bucks (NBA): AndrewMBogut
Johan Bruyneel, Astana cycling team boss: johanbruyneel
Pete Carroll, USC football coach: PeteCarroll
Mark Cuban, Dallas Mavericks owner (NBA): mcuban
Danny Granger, Indiana Pacers (NBA): dgranger33
Natalie Gulbis, LPGA: natalie_gulbis
Tony Hawk, skateboarding: tonyhawk
George Hincapie, cycling: ghincapie
Bobby Labonte, NASCAR: Bobby_Labonte
Levi Leipheimer, cycling: Levi_Leipheimer
Robbie McEwen, cycling: mcewenrobbie
Troy Murphy, Indiana Pacers (NBA): troy_murphy
Shaquille O'Neal, Phoenix Suns (NBA): THE_REAL_SHAQ
Kyle Petty, NASCAR: kylepetty
Taylor Phinney, cycling: taylorphinney
Morgan Pressel, LPGA: morganpressel
Steve Nash, Phoenix Suns (NBA): the_real_nash
Kerry Rhodes, New York Jets (NFL): kerryrhodes
CC Sabathia, New York Yankees (MLB): CC_Sabathia
Nick Swisher, New York Yankees (MLB): NickSwisher
Christian Vande Velde, cycling: ChristianVDV
Charlie Villanueva, Milwaukee Bucks (NBA): CV31
Dave Zabriskie, cycling: dzabriskie