Hitwise, how we love your unique take on internet trends. Supposedly, as of last October, social networks traffic has overtaken adult websites in the UK. The same happened in the US in mid-2007.
Given the amount of red-hot co-ed action on WooMe and other video communities, I think consumer-generated adult content is going to give professionally-created adult content a run for the money in the near future. Why pay for your titillation when there are thousands of people willing to offer themselves up for free?