The contextual related posts wordpress plugin is one of the best wordpress plugins out there. It automatically searches your blog to find other blog posts that have similiar topics. It will show at the bottom of each individual blog post through the permalink, 5 (you can edit this) related articles.

I really like this plugin because it makes your blog look more professional. The additional articles it shows will also encourage readers to want to look deeper into your blog. Finally it also helps with SEO as search engines will be able to better spider some of your buried content. Now I’ve tried other related post plugins and they never work. This is the only one that has worked from wordpress 2.0 all the way up to the newest release 2.5.1. on all of the various wordpress themes I use on my sites.

You can find the contextual related posts wordpress plugin written by Mark Gosh at his site locatedhere

In order to install it, unzip the zip file and then upload the related.php file to the plugins folder. You then go into your plugins section of the admin panel of wordpress and click on activate.