In his blog today, Matt Cutts made an interesting statement about Google's philosophy that lines up with the idea of "diversity" in the search results:
This type of "diversity" is a pretty expansive vision, and one that goes far outside the traditional idea of search. I would be quite happy with a set of traditional search results that grows more and more relevant as the algo improves.
I know I'm not considered a "common end-user", and I guess that they are the target. But when I want a mind-reader, I'll go to a psychic.