One of the most popular Search Engine Optimization (SEO) rating methods is known as Page Rank (PR). And the only way to improve a sites PR is to have other sites link to the site.
That's where this contributions comes in. It sets up a links page that is easily manageable from admin. It provides a quick and easy way for others to add links to your site and for you to approve and monitor them.
There is also an included script that can be ran as a background process, known as a cron job. This script will monitor all of your links and send an email to the link partner should it find one that is not present.
Don't put off optimizing your site for the search engines. It can take months before your work shows results. Increasing PR is easy if you have a way to manage the links in place. Why wait?