Reading about Search Engine Benchmarks: Visit to sale conversion rate where Dennis Mortensen shows that Microsoft Paid Search (AdCenter) is more effective in achieving the goal of the paid ad than Google or Yahoo Paid Search:
"… I found that Microsoft appears to be the best converting Search Engine today!
" …The findings which were exceptionally consistent from web property to web property – consistent as in the order of the engines. I did find that there was a large fluctuation, but in almost every instance the order hold true."
Did Microsoft finally figure out how to Win? My guess is - AdCenter, with it's superior targeting capabilities along with the more discerning and goal oriented advertisers - is going to produce a better result than AdWords or Panama.