I use AdSense, but many of my pages are long so I have room to put a 4th ad toward the bottom of the page. Since AdSense max is 3 ads per page I have been using a CPM, because it shows banners and does not violate Adsense policy with no text ads from other companies. That 4th ad was doing ok until now. I am not satisfied with it getting zero revenue the past 2 days on 40 clicks with 150,000 impressions. I know it is not going to get a lot of clicks since its towards the bottom of the page, but come on now, 40 clicks and zero dollars? So I think I want to put a PPC down there instead of a CPM. Any suggestions as to which company I should use? My main concern is that the other company I select does not violate AdSense policy. I also want one that does not have issues with paying people, or history of displaying ads that lead visitors to shady websites. I was thinking of trying AdBrite, but I heard AdSense often bans people who also use AdBrite on the same page. Please tell me why you like the company you suggest, thank you.