My point was any company that deals with a large amount of user submitted media will eventually end up having to have an abuse team that monitors user submissio

My point was any company that deals with a large amount of user submitted media will eventually end up having to have an abuse team that monitors user submissions for illegal activity. I don't see how the Snapchat's situation is unique from the problem of identifying illegal material, other than the fact that there is now a monetary way of receiving payment (which has existed and still exists today). In fact, Snapchat could even attempt to claim less liability if the material is never stored on their servers, compared to a file sharing or image hosting site that actually contains the illegal material. In this sense, they would only be liable if they knowingly allowed this trade to take place on their network, similar to an ISP, in my view.