I have seen this site infact blog http://www.vierstra.com/webwriting it shows me that it has a PR 6 but when i see towards its inbound links they are 138 ( in google) and almost all the links are from this site itself , then how did this got such a high PR
the site runs Coop or some other ads network. and has got a lot of links to the homepage, which so gets PR6. and of course some of the subpages also get PR6, including this one.