I think that its more that its so EASY to make money in straight as the market is so much larger and diverse. There are many program owners and producers who will leave no stone unturned to find the last bit of revenue to extract from the market.

I feel that it's a progression - the more extreme stuff gets more clicks in the promotion because of the curiosity factor, which results in a bigger push on that content, and more exposure, which in turn results in increased revenue.

Its a disturbing trend (the sleep assault sites are the ones that disturb me the most), but some people are not very ethical when it comes to 'whatever sells.'