I think I remember somewhere that they said a very high percentage of searches are totally unique i.e. never queried before thus not served from cache. I don't think they reword searches like Google does for a higher cache hit rate.
I never thought about that. That could explain a lot. Although I also recall Google themselves saying a lot of their queries are totally unique anyway.
> Although I also recall Google themselves saying a lot of their queries are totally unique anyway.
Which is probably why search quality is going down. They're rewriting your query to a more common way of saying the same thing, at least according to Google.
