adbrite has a not so good PPC CPM rate. Try Project Wonderful. There's no real middle man so all profits go to you through it's ad auction server. This site usually favors advertisers though
Its hard to use adsense because you get scammed so easily. You will waste money first month while you remove all of the spam pages.
I would NOT recommend 7Search Ads and EntireWeb SpeedyAds - they are so contexually not correct and pay so little it is frustrating. I have been waiting to try Chitika, but not sure what is going on there as I am hearing about more and more issues with them.
You can write to google to find out why they've axed your web site, once they had rejected my client web site but after few month we applied again and it was accepted.
Adbrite is totally useless in certain sites, it will show irrelevant advertisements for certain sites and also show adult advertisements, never use it in normal sites. Bidvertiser does not even show the relevant advertisement owing to the poor ad inventory, Kontera and Infolinks are partially good, to be precise adsense have no good competitors yet. Getting money from adbrite and bidvertiser is not an easy thing, try your hands.
I like infolinks. My bidvertiser account got banned = bad. Adbrite ... hmmm, ads not shown on my site.
I've tried bidvertiser and adbrite and they both have very low price per click, maybe 1 to 2 cents no matter what the add is.