toptensoftware/markdowndeep — pull request #33 by toneuk (2013-09-02 15:14:12+00:00)
Title: Changed NoFollowLinks to External Links Only

According to Matt Cutts in this article: http://www.seroundtable.com/archives/022462.html you should never add the rel="nofollow" to internal links. I have changed the NoFollowLinks check to only add the attribute to external links.