&gt; Maybe I do not like some policies about users of big players, though some intelligence about the user makes service much better (extent of tracking is another question&#x2F;rant).<p>This is a double-edged sword.<p>I&#x27;ve had an issue with Google over-personalizing my search queries to the point they become useless. E.g. I was searching for some technical documentation about SIMD intrinsics, and three out of five top results were stuff written by me (HN comments and such). Certainly not what I was looking for.<p>Overall, I think that all the blogspam and SEO crap in the world has made web search a more difficult problem than what it was in the early days of PageRank. In my experiences with both, Google and DDG, search results seem to be getting less and less useful year after year.