Facebook’s revenue has dropped – leaving investors worried ahead of a float on the stock market expected later this year. The world’s largest social network reported its first quarter-to-quarter revenue slide in at least two years. Investors took it as a sign that the social network’s sizzling growth may be cooling as it prepares to go public in the biggest ever Internet IPO. ‘It was a faster slowdown than we would have guessed,’ said Brian Wieser, an analyst with Pivotal Research Group.
