[FACEBOOK, YOUTUBE, AND TWITTER]: "Listen, we can't be held--" *takes down a video for using a popular song per a major label request* "--responsible for our users' content, we're--" *takes down unauthorized use of a clip of a TV show* "--not publishers, we're a platform for communication--" *takes down a streaming movie for copyright infringement* "--we can't be expected to take action every time someone uses our service--" *works with the police to provide info on its users* "--for nefarious purposes..."