Mainstream isn't terribly violent, but it's also not really a good representation of sex that women seem (in my experience and what my lady friends have told me) to typically enjoy. Lots of vids of roided out guys jackhammering until a woman is raw and her mascara is covering her face.
But there isn't really just 'mainstream' anymore. Weird face-slapping or gagging or bukkake stuff is a click away from the front page, frequently in 'suggested videos'.
