Quote Originally Posted by ssarkar
Yes CPM ads are cost per impression. Google adsense has both cpc and cpm programe but it does not disclose which ads are for cpm. I heard in a forum that the image ads are for cpm ads, but I don't think so.
will google show ads randomly wether by words or images?if so then it is hard to earn by cpm because people can not sure how many images will show in their sites.