YouTube must give all user histories to Viacom

psyopper writes: "Google will have to turn over every record of every video watched by YouTube users, including users' names and IP addresses, to Viacom, which is suing Google for allowing clips of its copyright videos to appear on YouTube, a judge ruled Wednesday. Although Google argued that turning over the data would invade its users' privacy, the judge's ruling (.pdf) described that argument as "speculative" and ordered Google to turn over the logs on a set of four tera-byte hard drives."