VentureBeat writes, You’ve always suspected that “social media expert” with 57,000 followers and 34,000 tweets — all quotes from historical figures — was just faking it until, possibly, making it. Now Barracuda, the security company, has done some research on the Twitter black market: buying and selling followers. The results don’t look pretty for Republican presidential candidate Mitt Romney, who looks to have acquired a significant number of fake followers, and security expert Gregory D. Evans, who Barracuda says probably purchased followers at least four times. Social proof,...