I upgraded my Yahoo account to their new system in the middle of January. Since I upgraded, conversion rates for all of my campaigns (various products) have been dropping significantly. 8% conversion rates are now down to 3.5%. I had all the campaigns working great in 2006. Since the upgrade I spend my time fighting to make money.

Is any one else having this experience? Does any body know why this is happening? Did Yahoo change it's search providers?

Any insight you can share would be very helpful. I have a rep at Yahoo, but am not getting any answers.