A few Question's about twitter?

Charlie Sheen, Caitlin Beadles Christian Beadles, Enimen, Will Ferrel, Conan O'Brien, Chris Brown, Tinashe, All of the American Idol contestants, No actors have Twitters only a few.. but its mostly all singer/song writers, Miley Cyrus, Selena Gomez, Demi Lovato, The Jo Bros, a bunch of people.. its hard to name all of them.