I'm designing a new paysite for a friend and we've run into the same problem. 99% of these tours are completely interchangeable, but what works and what doesn't? Is it better to tease the surfer with 3 pages of pretty graphics and then hit them with the signup page, or let them see a whole lot of content (relatively speaking) and then make 'em pay when they want to see more?
Personally I like the way Karups PC does it, it's not as intricate as Amateur Pages, but it does give the surfer a good idea of what they're gonna find inside and I think that's what sells.
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Plenty of wheat to go around.