I am considering using an ad server on one of my websites and wanted to see if anyone was using (or used) OpenX? What about Google AdServing or Atlas AdManager? Any others you recommend?
I would love to found out which is the easiest to use and which is the most power?
On the flip-side, I am also looking for display ad serving/optimization our advertisers (vs. publishers). Can anyone recommend a company? Atlas, Zedo, Mediaplex, APT, others???