@simoncowell
https://twitter.com/#!/simoncowell" target="_blank">@simoncowell</a>" src="http://9.mshcdn.com/wp-content/gallery/big-name-twitter-accounts-launched-in-2011/simon-cowell-simoncowell-on-twitter.jpg" />
TV personality and music executive Simon Cowell is Twitter's newest celebrity. Cowell, who became...