I was going to say phpAdsNew for banner/ad rotation, which I guess is now openads, as picXX already mention. The original use to be just the scripts (free), I really don't know what the new one is or how it works, haven't been following it.
I think the site looks pretty nice. I would have ads up top instead of sending them to another page. For sure track your ads so you can get the most out of them. I've never used adbrite or anything like it, but seems to me you would make more serving your own ads to your own affiliate programs.
I am no tgp expert, so can't comment on the rest. I think it looks good so far..
