The relationship created works reciprocal, which means that if post is added as related to post B, post B is added as related to post as well.
Related Posts options page allows you to customize the way related posts are displayed.
Download the plugin and unzip, Put the in your wp-content plugins folder, Activate the plugin through WordPress admin, The plugin will display related posts underneath your posts content.
Additionally, you can add attribute posttype to the shortcode to display the related posts of specific post type only.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
Added better way of implementing AJAX search in Related Posts box on the edit screen.
Added CSS file for styling Related Posts on your site.
Added support for multiple instances of the widget by using the Widget API introduced WordPress 2.8.
Added shortcode support you can now place the shortcode within the content of your post to display the related posts anywhere you want. Added parameter to MRP get related posts function to get the related posts in object, so you can use it in other plugins or your own custom way of displaying the list of related posts.
Fixed small issue with the paths to the.js and.css files which made the plugin break on blogs that reside in subdirectories...
Read more