(Telecompaper) A US district court in California has dismissed a USD 15 billion lawsuit against Facebook, accusing the company of secretly tracking the internet activity of its users after they log off, Bloomberg reported. The judge agreed with Facebook's argument that the case should be dismissed because subscribers did not specify how they were harmed. The judge, who took more than three years to issue his ruling after hearing arguments in the case, said the users could refile most of their claims in a revised lawsuit.