Well mainstream firms do it, so is it about time porn firms did.
 

http://www.bbc.co.uk/news/technology-23325627

If webcam sites and dating sites and so on stoped alowing sites such as porn tube sites (full of stolen content) to make money from them, then mabe it would cut out a bulk of pirated content.

lol...its like an endless circle though man...IM pretty sure the cam sites dont mind the signups they get from the tubes...who cares if the tubes have all the captured live shows...just another free ad for the cams and the tubes and the cams and the tubes not you and the tubes not you and the cams dolla bills francs yens and pounds dallar dalla bills