SuzyUK - 7:57 pm on Jul 20, 2008 (gmt 0)

but is it reasonable to consider a site being authority of PR is just 5?

yes because authority site does not = TBPR. (having surfed "naked" for about 5 years now, i/e no pr clues, I would like for you to correct me if I'm missing something)

IMO, it happened because it was natural, which means (to me anyway) that the big G know their basics - and this SEO thing is very very insular?