Adult Webcam Site Membership Drive

We need a membership drive and promotional campaign to get our adult webcam site membership and model join rate up. We are not looking for SEO, we have that already and have invested heavily in a long term program. What we are looking for is advertising/promotion to get our name out there quickly, in a short amount of time, while longer term SEO is being worked out. I want this campaign to increase model/membership rates by 50-100 new joins. New members/models will be verified, no fake joins are allowed. Campaign to last for several weeks with a 2 week review period after you finish your campaign to ensure all joins are real. Don't bid if you have no demonstrated experience in this area. The budget for this project is a maximum of $500.00. References of customers who has used your service in past are a plus.