AdSense Competitive Ads and Services Policy just got a lot tighter for publishers
Publishers have often complained about the rigidness of the AdSense policy that prevents publishers from running AdSense on the same page as another contextual ad program. So running AdSense & Yahoo Publisher Network on the same page during the same page view would be a no-no, but rotated 50/50 would be perfectly within the AdSense (& YPN) policies and terms. But not any more. Their competitive ad policy has gotten much, much tighter when they updated their AdSense policies today.