The announcement that Microsoft would purchase Yahoo search really had & still have people wondering. This might be great for the US but what about other markets that are trying to get away from US based owned technology? Japan, Hong Kong, & Korea for example?
Japan is actually trying hard to dump the US Panama system & develop their own system for contextualize ad serving. Why would they go to a Microsoft Ad Platform which is even more unreliable, & completely untested in the Japanese market? These are the questions that I think are unanswered. Currently Yahoo Listing service (Formerly Overture) is already serving their ads on Microsoft search properties.
What is the benefit to Asia is something that is yet to have a clear cut answer.