I'll have to rework some of my ads, but all in all no great loss. Maybe the Doubleclick service will actually turn some conversions for me. Although I gave the affiliate links prime placement, they never did convert. The clicks were not even measurable compared to regular AdSense units. Maybe it was just my site, but I found the referrals to be a waste of space overall. This was even after being careful to pick advertisers which matched well to my site's content.