It provides a great picture of the overall landscape of the problem (it’s not just search, after all!).
I especially liked slide 4 – a very telling illustration of the challenge we face in intelligently making information available to our users.
Re: Slide 24 – As I’ve written about before, I would say that the 80/20 rule is more than just “not quite accurate”. But that’s mincing words.
Overall, a highly recommended read.