As part of the constant evolution of the Bing search engine results page (SERP) to provide more value for our users and our advertisers we are regularly evaluating performance and quality of our ads, including ad position on the SERPs. In keeping with this commitment, we have decided to remove sidebar text ads on our Bing inventory in the United States on March 26 th , with international markets testing to follow at a later time. Our testing showed that SERP layout excluding sidebar text ads drove overall click gains for our advertisers, particularly for existing Mainline Text Ads and Product Ads , with an immaterial impressions impact. Furthermore, we are planning to increase ad coverage on the bottom of SERP, which allow for richer ad formats, which sidebar ads didn’t, thus driving improved click through rates. Additional Change Details Here are more specifics around the changes we are rolling out: Text Ads will no longer be served on the sidebar, while Product Ads will cont