Gartner anticipates that by 2014, up to 15 percent of social media ratings and reviews will be fake. Analyst Jenny Sussin cites the increase in marketers paying for positive reviews with cash, coupons and promotions. Gartner also predicts at least two Fortune 500 brands will face litigation from the U.S. Federal Trade Commission (FTC) for phoney reviews. [Source: Gartner]