http://www.melonfarmers.co.uk/arwhitep.htm
The content of every single adult tape manufactured by the legitimate adult video industry on the shelves of every video and adult store in the nation involves only consenting adults. Roughly 90% of the material produced and distributed over the past 14 years contains mainstream sexual acts (oral sex, anal sex, group sex, etc.). Adult movies do not contain rape, coerced sex, sex with animals, violence, incest or child pornography. The other 10% of the material available is classified as specialty material (i.e., foot fetish, tickling fetish, bondage, spanking, etc.) which does not contain explicit sex, but which still involves consenting adults.