Check my first link in signature, I use them after adsense didn't work out for me. You will get 20$ of free clicks as a bonus, so you can also advertise your site.
I also use bidvertizer although I don't seem to get as many clickthroughs as I did with adsense. They are definatly easier to deal with than Google thats for certain. How well is everybody that uses bidvertizer doing percentage wise with clickthroughs?
I am just changing all of our 35 sites over to Adbrite from Adsense during the coming few days but will still leave a few Bidvertiser ads on certain sites like our Blog. Mega........