I've been displaying ads served by tribal fusion for a couple of weeks now on a tutorial site. I have popup/under ads blocked, but I'm thinking of displaying them on some pages, where they can download PSD files. It's going to take a fair amount of work to prepare them (over 100), so I'd just like to know how people are finding the eCPM or TF popups/popunders as compared to regular banners in general?
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