But don't expect the cycling legend to follow you; he'll only follow those who Tweet for a cause It's hard to tell if a celebrity is really using Twitter. When it was reported that Britney Spears had a Twitter account, popular blogger Gary Vaynerchuck, cried "Foul," accusing the star of only "kinda" posting Tweets. Turns out for a long time, there was a fake Lance Armstrong on Twitter. He'd put out Tweets daily, saying: "Goin for a bike ride." But it wasn't him. That's no longer the case. About 10 days ago, the real cycling legend managed to take over his name.Armstrong was the main event last night at the Web 2.0 Summit in San Francisco. He took to the stage for a fireside chat with John Battelle, Federated Media founder and host of the event.  The seven-time ... [ Read more ]