Awfully Big Changes to Ad Rank
Change really is the only constant in this world and that includes advertising campaigns. If you are comfortable with the way Google determined Ad Rank, you have to accept that things changed radically several months ago. Google now doesn’t just consider the bid and the Quality Score. The expected performances of the ad extensions are now going to be part of the arithmetic. Please don’t pretend that changes are novel to Google. They have been doing it with Ad Rank all along.