AdSense showing Vista ads despite irrelevancy
What's up with AdSense? I've noticed over the past two days that many of my sites that use AdSense are showing an ad for Windows Vista, which is completely irrelevant to the content of the sites. Most of these sites have some Canadian content on them and the ad URL is windowsvista.ca. Conversely, my sites with predominantly U.S. targeted content are showing relevant ads with no mention of Vista. Did Microsoft buy ad space from Google, circumventing the restrictions of AdSense relevancy, or this this just a case of poor relevancy on the part of AdSense's contextual engine?
