engasm89

The plugin is easy to use and it has a simple, user-friendly interface. 
It is also highly configurable, so you can customize it to meet your specific needs. 
The WordPress External Link Redirection plugin is free. 
It can help you triple your income from your ads by showing people more ads when they visit external links inside your articles or pages

External Link Redirection

The WordPress External Link Redirection plugin allows you to manage your site's external links and forward people to a waiting page with ads to m …

Tran Ngoc Tuan Anh

This plugin adds rel=”nofollow” to all external links in post content. So, your flow of PageRank can not run to other websites and your blog’s SEO is improved.
The internal links are unchanged.
Requires PHP5.

External Link Redirection vs External Nofollow