I found only 11 websites with Page Rank 10/10. And Guess what, Google.com and Facebook.com are not PR10. You can check out yourself:
The List of PR10 websites
- http://get.adobe.com/reader/
- http://get.adobe.com/flashplayer/
- http://www.hhs.gov/
- http://www.miibeian.gov.cn/
- http://www.addthis.com/bookmark.php
- http://www.europeana.eu/portal/
- http://www.eua.be/
- http://www.universitas21.com/
- http://www.twitter.com/
- http://www.un.org/en/
- http://www.addthis.com/
I believe the reason is that they became too famous that noone is linking to them anymore... hahha
