I used Adbrite in the past and would not suggest them to anyone. I paid probably $60 initially to have my ad run on a network site for a week. Lots of traffic but not one person converted. I ended my ad campaign with them, and over the course of the next 6 months Adbrite decided to bill me again, multiple times. I called their management pissed off due to the fact that it came unexpectadly, when I had not requested it. They did nothing to comfort my anger, and said they simply could not issue me a refund. So I wound up spending about $170 for traffic which did not produce one signup for me. Horrible service, horrible conversions. Stay away from adbrite!