There was a thread I started about single girl amateur sites awhile back.
The points are all valid above, it is just a shame that some people would rather push complete shit for $35 a pop, rather than something that converts much better at a lower payout.
I am currently working on a program for one of my single girl sites:
Cynthia K.
And I am may offer a per signup and recurring option... retaining at 70%+ for 4 months now.