ryokurosu

This plugin is a better way to set a similar post in article. 
All you have to do is setting a shortcode.This plugin works setting similar post.

Simple Shortcode Similar Post

This is a better way to view similar post.

Recmnd allows you to show related content to your readers. The recommendations are real-time and change when you update your content or when you publish new articles. All recommendations are served via a widget and you control its style, the information shown for each suggestion, the number of displayed recommendations, the time period of the recommendations, and the depth of the recommendation analysis. In order to use the Recmnd service you must register for an account: <a href="http://www.recmnd.com/plans/" rel="nofollow ugc">http://www.recmnd.com/plans/</a>. This plugin works with our trial accounts as well.
For more information, please visit the Recmnd website at <a href="http://www.recmnd.com/" rel="nofollow ugc">http://www.recmnd.com/</a>.

Recmnd

The plugin allows you to use the Recmnd service (www.recmnd.com - automatic recommendations) with your WordPress blog without coding.

Simple Shortcode Similar Post vs Recmnd