Page is a not externally linkable
-- Google SEO News and Discussion
---- Googlebot asks for pages deleted over two years ago
Dugger - 1:04 am on Jan 29, 2008 (gmt 0)Thread source:: http://www.webmasterworld.com/google/3559286.htm
It seems that once a page is in their database it is there forever until removed is requested. No links are required.
Brought to you by WebmasterWorld: http://www.webmasterworld.com