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 Nofollow

XAce90

Casper’s Leave Notice warns your users when they are about to leave your website. All you have to do is install and activate, and the plugin does the rest! You can edit the content that shows up in the pop up window to fine tune the message your users see. You can also add domain names to exclude from the pop up.
For example, if a link sends your users to a third party tool – like a shopping cart – just add the domain to the exclusion list and your guests will be none the wiser.

Casper’s Leave Notice

A quick, easy way to notify your users when they are leaving your site. You can edit the content and add domain exclusions.

External Nofollow vs Casper’s Leave Notice