I think the most important thing Jeremy points out is that the demise of PageRank coincides with the general understanding of how the technology works. As with all search engines of the past, ranking methods or practices will always be the focus of marketing organizations. It's the same battle we're going to face with weblogs--social versus sales goals for technology. Commerce doesn't destroy the social value of technology but it alters it as it has with Google's PageRank.
and 2nd behind yahoo in a search for ""<>