advertise a social network site, get paid based on number of signups

This project is to advertise a social network. It's very simple you will post the URL to the most popular classifieds ads site dating section and tell them to contact you on the social network. So you must be able to mass post to the most popular classifieds site. You will be paid based on the number of signups you get each month. The more times you post the more signups you will get.