This is floating over some porn forums for sometime now and it's nice getting some opinions here. I'm pretty sure that it exists because I had used bitcoin on some of the best pay porn sites http://www.best-pornsites.com/ I'm using. Though there are only few "well-known" porn sites that offers this feature. Porn is a growing fast as stated by many of you. Yeah, so I'm pretty sure these big porn companies are considering it now.