The whole point of TGP to begin with is to offer free samples to create emotional stimuli in the surfer resulting in a sale.
So I don't see why people get so bent up over how much free content is out there.
If I want to whack off to TGP porn I can. I can use google and sites like freeones to get as much free porn as I want.
Yet TGP traffic still converts.
So look at this way .. maybe one gallery doesn't do much for a surfer .. but he likes it enough to see if he can get more. So he'll do one of two things: 1) he'll go to a search engine or kazaa or whatever and try to find more of that series .. or 2) he'll look at the url and see if there's a 02 or 03 etc.
Maybe he likes 01 combined with 02 .. and says to himself "man .. this site has gotta rock! The chick in 01 was amazingly hot and so is this chick .. I'm gonna see how much the membership costs!" and he goes and signs up.
Or ... if he doesn't sign-up .. he'll eventually get a 404 .. and then we can filter the surfer more to feed our TGPs or what-not .. thus getting more traffic for our trades etc.
Type-ins are your friend
