This plugin auto links SEO keywords and phrases in your blog according to pages, posts, and categories. It helps to keep the anchor text intact. The best features of this plugin are the automated interlinking and automatically interlink tags, posts, and categories. Affiliate marketers can benefit from this plugin since it can create affiliate links automatically and add attributes like New Window and Nofollow. This makes the affiliate content more search engine friendly. The SEO Smart Link Premium plugin enables you to associate the links with any word. It can also process automatically all your future posts for that link which will greatly improve your blog search engine rankings. SEO Smart Link Premium costs $149 and is available in two licenses: the personal for beginners and the business version which is suited for those who offer WordPress services. It makes it easier for viewers to share content.
Naman Modi.com -SEO Smart Link Review 