A general view of atmosphere at The Bing It On Father's Day Challenge hosted by Bing and LL Cool J on June 11, 2013 at The Standard, High Line in New York City.  - 

While investors mull Twitter's true assets ahead of the company going public, the services of two other tech companies recently came under scrutiny with the help of a professor at Yale University. Those commercials you may have seen surveying users who seem to prefer Bing to Google? Their results might be a little skewed. Will Oremus of Slate Magazine explains.