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dataguy - 1:20 pm on Apr 2, 2009 (gmt 0)
Besides, removing low-performing ads from AdSense seems to not only increase AdSense CPM, but overall AdSense revenue as well.
I decided this week to give YPN another shot and I'm using it to replace AdSense ads on pages which AdSense has paid nothing since the beginning of the Analytics integration 5 months ago. This might not be a good method for comparison, but anything from YPN is better than nothing from AdSense.