Ed--Why don't you guys offer flat member rates for advertising? Supporting this forum by directing traffic to member sites seems like a win-win situation. It helps the community, and it helps the members who advertise their sites (I want the Debate and Complaint forum). I would hope that folks would support advertisers if they were fellow members in this forum. I would also think that a flat rate (x amount dollars for y number of weeks--like with print advertising) would work far better (and be a lot easier to estimate) than a per-click formula. (That way Renderosity would have the money up front for operations, instead of relying on visitors to click on banners). I have no idea what your ad revenue is like, so only you could break it down into a formula that would help you continue this site, and help advertising members get their banner ads up in the forum. But I think it would be a great revenue generator if you decide to remain a public "for-profit" site.