I am looking for banner exchange sites for my startup. Your site was interesting at first but there are two drawbacks. You don't give free credits on registra

I am looking for banner exchange sites for my startup. Your site was interesting at first but there are two drawbacks. You don't give free credits on registration. We want to use banner exchange to jumpstart our site. We don't have users. We want users. Without starting credits I have a cold start problem. 1 for 1 banner exchange doesn't solve my problem. I want to drive traffic to by newborn site. Another formula would be better.