My sites don't have a lot of traffic so i can't say for sure, but i think the new system sucks. They don't even give you an option to filter them out. Let's see how others are doing, check your eCPMs and vote the poll.
After my earnings dropped, I just manually approve adverts. I rejected most CPC ads, only allowing CPM since my site gets about 3-8k views a day...
I do the same, only problem is they don't tell you which banners are CPC and which CPM you have to accept all of them and delete them afterwards from statistics, after they show up... go figure..
I am looking into other venues of making revenue. I used to have adsense on my old website, which i recently shut down. Was making $400 a month.. *cries*... Just it was really high maintainance... Now I make about $50 a month... Have you noticed they try to make you use CPC more than CPM after 2-3 weeks of using them? Initially my ads were 90% CPM, now with my alexa rank higher, and Page Views higher they have gone to 90% CPC... Really annoying...
Not to come here and rain on everyone's parade but didn't AdBrite suck to begin with? I stopped using them like 6-months ago when i realized I was having 20k Unique a day and $0.60 in earnings..