On a related note, given that Google has been using their hiring and employee performance data to try to improve their interview process (http://www.linkedin.co

On a related note, given that Google has been using their hiring and employee performance data to try to improve their interview process (http://www.linkedin.com/today/post/article/20130620142512-35894743-on-gpas-and-brain-teasers-new-insights-from-google-on-recruiting-and-hiring http://www.linkedin.com/today/post/article/20130620142512-35...), I wonder whether they have also managed to identify good and bad interviewers.