When it first came out in 2005, the Flock browser was a Mozilla/Firefox derivative with a novel difference: a RSS (and later social-network) sidebar that allowed users to keep one eye on feeds while continuing their usual web browsing, and also featured drag-and-drop photo uploading. Today, such incorporations take many other forms -- from menu items to plug-ins -- but the basic idea has proven popular. Back in January, CEO Sean Hardin announced that the Flock team would move en masse to the social-network gaming company Zynga and that development would be halted. To
