Hello. I experienced a drop too once I used the Adsense features integrated within Ad Manager. It might have been a knee-jerk reaction on my part, but I reverted back after around 3 days and my earnings were restored almost immediately. I haven't tried again to see if I was justified or whether I was over-reacting. I now run Adsense as an external advertiser within Ad Manager, and manage the Adsense adverts solely through the Adsense panels. This seems to work ok for me.

[edited by: encyclo at 12:59 am (utc) on June 29, 2009]

Ad Manager seemed to increase my impressions and thus reduce my CTR and eCPM. When I stopped using it, things looked much more normal. I can't swear to it, nor have I seen anyone else who has reported it, but that's how it worked for me.

@netmeg
Was your revenue affected on average?

Thanks a ton for all the input and ideas. I wonder if others have experienced the same issue too.

Was your revenue affected on average?

Can't tell for sure, there are too many other factors. But my sense was that inflated impressions causing my CTR to look worse than it actually was could affect smart pricing, so it seemed a good idea to get rid of it.

It is sad when Google fails to debug their two products to work together properly, especially when they strongly advocate to use ad manager and provide deep integration.