Page is a not externally linkable
-- Google SEO News and Discussion
---- Google releases guidance on Backlinks and Reconsideration requests
aakk9999 - 10:47 pm on Jun 25, 2013 (gmt 0)Thread source:: http://www.webmasterworld.com/google/4586567.htm
Create a test domain, point many links to it and keep "allowing" them one by one and watch the effect. Then use ones that work on your good sites.
Brought to you by WebmasterWorld: http://www.webmasterworld.com