If you haven’t used Flock, one of the original “social browsers,” then… Actually, that was the problem. So few HAD used Flock, at least long term. Technically speaking, they had 10 million users, but based upon numbers from third parties that active usage of the beleaguered browser was likely much lower. As a result, Flock becomes the 8th company in 8 months to be swallowed up by Zynga, and like most of the previous acquisitions, this is likely a move to accumulate talent. There is no need to add to an already-loaded browser segment, and even the niche of being a social browser is being contested…