Can I block all CPC campaigns and run only CPM ads?
Yes. However, you must first establish a “default” ad for each ad size you are running. Your default ad can be a house ad, an ad from another third party, or any other image or redirect of the same size. There may not always be a CPM ad available for your site. We always serve CPM ads first and use CPC advertisers to fill in the remaining inventory. The number of of CPM campaigns running on your site will vary, and depends in part on your site’s performance.
