Alexa & A9 Switch from Google to MSN

It looks like both Alexa and A9 have switched from using an abbreviated Google Web database to using MSN's (although it is labeled Live.com which is more of a different front end to the older MSN Search database rather than a different underlying database). At the moment, there is no longer any image search at A9 (previous one was from Google). Nor do I see Google text ads on Amazon anymore.

At this point, there is no official word about the change on A9's press release page nor at Alexa nor Amazon. (Nor does Google mention it in their blog. Surprised?)