It's common knowledge in the SEO community that the public PR number doesn't correlate with the internal calculated PR number that google uses. It's not that t

It's common knowledge in the SEO community that the public PR number doesn't correlate with the internal calculated PR number that google uses. It's not that there is a lag, it's just not the same number. However, yes it's true, that obviously there is much more to ranking for a given search term than just having a lot of PR. There are mountains of empirical evidence that gaining links from authority sites does in fact give you a better ranking.