have a look at these two pages:
1) http://www.facebook.com/zvz.ro (PageRank 4 from Google toolbar)
Amazingly it has got NO links to it (you can see it with Majestic SEO free report):
http://siteexplorer.search.yahoo.com/search?p=it-it.facebook.com/jeanchristophe.cataliotti&fr=sfp (Yahoo SiteExplore is dead now, Microsoft already started to kill any useful thing that was given out by Yahoo for free)
2) http://www.facebook.com/poste.certificate (PageRank 1 from Google toolbar)
Still amazingly it has got NO links to it (you can see it with Majestic SEO free report)
And the same results can be found for many Facebook pages.
How do you explain this?
Hoping for an explanation that goes beyond just saying that the PR in Goole toolbar it's not updated, because it can not be the reason for this!