Bing Copies Google Results

In an amazing post by Danny Sullivan , which details how Bing watches what people search on Google, copies it & uses  the information to improve its own results. Of courseMicrosoft denies it.. but what was novel was the spy hunt by Google to caught Bing red handed. It all started with “tarosorraphy”  which is a medical term for a rare surgical procedure on eyes, which was Googled in the summer of 2010 & was quirky enough to get Google’s attention. They corrected it , but what was peculiar was that Bing displayed the first correct result of Google without even a correction of spelling. As the official Google blog states - 

Google returned the correct spelling—tarsorrhaphy—along with results for the corrected query. At that time, Bing had no results for the misspelling. Later in the summer, Bing started returning our first result to their users without offering the spell correction (see screenshots below). This was very strange. How could they return our first result to their users without the correct spelling? Had they known the correct spelling, they could have returned several more relevant results for the corrected query.