I have both and Adwords and Adsense account as I am sure most people do. Does looking at which key words are going to cost the most on Adwords help to indicate which you should be targeting through Adsense? Seems logical to me but I am sure that I'm not the first that has tried (and most likely failed using this method.)
yeah it seems to be logical reason...but google takes the net as market which contains demand and supply and its all about the visitors -where they come from and what is there destination .