Page is a not externally linkable
-- Google SEO News and Discussion
---- Pagerank with no links (how)? Virtual PageRank?
rainborick - 3:06 pm on Apr 5, 2009 (gmt 0)Thread source:: http://www.webmasterworld.com/google/3885397.htm
One simple answer might be that one or more of the pages where the links to the simple local site originate increased in PageRank, which was then reflected in your site's PageRank. It does happen.
Brought to you by WebmasterWorld: http://www.webmasterworld.com