Does anyone here know whether sexting is actually a major use for SnapChat? It's often thrown around as the 'obvious' use-case for the service, but having not tried it I'm not sure if there's any curation/content flagging or banning system.

If it is a popular use, does facebook really want that sort of content? Does facebook think that sexting users would trust them with their photos? If I were to send a sext, I'd certainly consider the (even faint) possibility that the pics could get up on facebook somehow...