I would like to get feedback from webmasters who have used Google Ad Manager and OpenX, would like to know which one they prefer and why? I am especially interested in knowing which one has a better capability to rotate ads by percentage of impressions, by ad network and by customers? Also, would like to know which one has a better Access Control features. Many thanks for your input. Admin - Not sure if this is the right category to post this thread, please move this to the correct category it this one is not.