My Google results are noticeably worse for me logged-out (or through DDG) than logged-in. This suggests that search is in fact such a hard problem that my sear

My Google results are noticeably worse for me logged-out (or through DDG) than logged-in. This suggests that search is in fact such a hard problem that my search engine literally needs to know more about me than I know about myself to do a good job for me. Which explains why Bing has such a hard time unseating Google - I'm always logged into GMail, so Google has known it's me doing my searches for the past eleven years.