Our business has been cut in half since the migration, same exact campaigns, ad groups, keyword etc. Adcenter system sucks. They don't display our ads nearly as much. The Yahoo system triggered A LOT more search queries than Adcenters system does. Also, our bid price has increased by about 25%. I will be very interested to see how Yahoo's revenue stacks up once the quarterly numbers are in after this transition. This transition has been a disaster for myself, as well as many others I know.