I just got an email from a yahoo group. In the email they are discussing models for paysites and how all models are exploited...blah blah... anyway,
he goes on to say this, which I find particularly validating for the argument that there is simply too much free porn.

" i most probably wont join a pay site unless its
something i love. too many free stuff floating =) "

This is directly from a sufer who used to belong to a paysite according to the email, but of course he has found free porn so no longer needs to pull out a credit card.