http://googleblog.blogspot.com/2008/07/technologies-behind-
google-ranking.html Some of the ways in which Google disambiguates queries, so that it can return what it thinks you want, instead of what you said you wanted. I actually wish Google would do less of this, or would at least tell you when the results are very sensitive to location or term order, etc. (The did you mean... system is fine.) A few years ago Google decided that the order of search terms was meaningful, and so now I sometimes enter various permutations of the same terms if it seems like Google is getting confused. I’d rather not have to run the same search across different versions of Google. Coincidentally, I discovered today that Google Maps reckons the Natural History Museum is on Park Avenue (about a mile away from where it should be). 22:13