Welcome to XNations Brett!!
Building traffic is a process that occurs over time. You will need to start somewhere of course but as long as you keep your site(s) updated, SEO friendly and build up as many quality link trades as you can you should be fine.
Also, push your new paysite for all that it's worth, get your name out there, place your button/link in your sig at forums, create a good vibe for your program and offer good customer support and eventually your paysite will begin to promote itself more and more.
You could pay for traffic but my advice is don't purchase worthless pop-up and exit traffic, blind links, skimmed, etc... that kind of exposure only pisses surfers off and will give your image/company a bad name and normally surfers won't visit again if they are faced with pop-up hell or forced to visit a link they had no idea they were going to.
Also, although mainstream and adult sites are two entirely different beasts, a good option is the Yahoo! directory, I believe it costs $600/year for adult listings which may seem like a lot of money but it pays for itself.
Anyway, again welcome aboard and good luck with your empire. Don't be afraid to ask questions and try different tactics, that's the only way you'll learn how to earn big $$$ online.
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