I know Yahoo uses Google results, but I am hoping that it will be the Google results that will stick -- and not the occasional #7 at Yahoo. What is the trend normally? Is the Yahoo results for the same keyword a foreboding of things to come? Or are they just delayed?
Right now, Y is in a state of flux as they appear to be making the move away from Google results to their own internal results that come from the combined purchases last year of Inktomi, Overture, etc.
You may want to check out the Yahoo Forum [webmasterworld.com] for the latest discussion of what they're showing and when they're showing it. I think it would be off-topic in this Forum to go into detail about what Y is doing.