I used to own a GPT site that had a PTC section too and also opened a PTC off of that as well. You will need to invest some money of your own and put up your own ads to either sites you own or CPA offers. Most of the time, you will need to put up incentive offers, as the networks are anal about people getting paid to even click on links, so be careful. You will never get people to pay to put ads on your site without any members, so you will need to invest a couple of hundred probably until you get a good member base and then start really advertising your traffic. Also, don't just advertise on your site, but go to other forums in like a marketplace area and sell traffic. But you need members first, so start building and good luck!