User blog comment:Dopp/Technical Update: May 15, 2012/@comment-1474707-20120517130045/@comment-1474707-20120517130658

Oh god and it seems to have some sort of personalised memory where it shows top results of things you've clicked on in the past.

I don't know how it default arranges the results in order, but it often seems to give priority to redirects at the top of the list. Also, when you first type something it explains that the top result is a redirect, but when you delete and type again it stops telling you why it's showing a random result containing none of the letters you're typing