At the end of the article the author insinuates that the Bing ad partnership might lend itself to tracking users or otherwise making the service less secure and anonymous. Is that possible?
On the other hand if there's just a bit of javascript on the search page that says "Tell bing to put ads on this page using the search bar text" then bing would be able to link the search to an IP and you lose your privacy.
"Ads cannot be retrieved from the developer directly but instead through the end user's browser. Calling for the Ads from a server will lead to detection and termination of the customer."
http://developer.yahoo.com/boss/search/boss_api_guide/sb_spo...