Well, the large social networks are under pressure for a long time now. And with "The Hub" events lately, I think it has been pretty obvious for a while now that things are about to change. Sooner or later, platforms with "user generated content" are likely going to get a real hard time operating.
(For smaller communities that can maintain strict moderation, it isn't going to be much of a problem, I assume).
My prediction - Twitter and Reddit will ban adult content entirely as soon as in the upcoming year, hoping it will save their ass. But they will probably follow the same path as Tumblr went, and as a result - losing most of its userbase and market value.
