> Let us start with the need for data, going straight to the point: one cannot build a competitive search without data collected from people.<p>Google had a very good search engine before they started to collect data from everyone, not after.<p>I don't have a metric to decide whether the search results from google got better or worse over the years. Subjectively and for me personally, they've gotten worse. And I'm not the only one who thinks this. I could be (and probably am) wrong, but I think the more personal data a search engine has, the worse the results.<p>When I think about it in that way, it makes senses why it has gotten worse. The search engine pays more attention to the data it think it has collected from me and how it relates to advertisers, etc... instead of paying attention to the actual words I wrote in the query.