Comment by mc808

I've disabled search history and Google still tends to give me the most relevant results. Perhaps they also do some customization based on session cookie or something (I know YouTube does for recommendations) and I'm pretty sure IP location still plays a role. But I think it's mainly that I know how to ask Google for what I want, not that Google knows what I want necessarily. I still give DDG and Bing a chance once in a while, just in case, but old habits die hard.