We use phpAdsNew to serve our banners. It's free, easy to configure and manage, and very flexible for us to serve unique ads to our different communities. The reporting backend is decent too.
We also had decent success with CJ. We were selective about which ads to place though, we tried to stick with companies, products, and services complementary to our site and mission.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.
