Google and Viacom announced a settlement Tuesday in a long-running lawsuit claiming the Internet giant's YouTube video-sharing site promoted copyright infringement. "This settlement reflects the growing collaborative dialogue between our two companies on important opportunities, and we look forward to working more closely together," a joint statement by the companies said, without offering details. The suit dates back to 2007 when Viacom accused the Google-owned video-sharing division of using pirated video clips to attract viewers.