It is also very useful in terms of on site SEO by cross linking relevant content with one another. This is especially so when you have a large site and hundreds of articles.

You can of course do this linking yourself but on a large website, it will take up a lot of your time. Hence, wordpress post recommendation plugins become very useful. They automate such matters by using keywords and categories to help recommend relevant content to your readers.

 

Advanced post list

Advacned post list allows you to create a listing of articles which you can then placed anywhere in your blog with a shortcode.  While this takes more work, it allows a finer control that some bloggers might prefer.

 My beautiful tubes

For bloggers who have youtube videos, this plugin will be very useful to you. It draws youtube videos into your post and then uses facebook comments to get it viral.

 Nrelate flyout

Nrelated has a nice display fly-out display that looks good on your blog, similar to how new york times fly out works. Its patent pending algorithm also ensures that only the most relevant posts are recommended to your readers.

 WordPress related posts

A very nice plugin that gives you stats on how well these recommended posts are doing in terms of clicks and time views. Great for anyone who wants to better analyse their audience.

ELI’s Related Posts Footer Links and Widget

A simple but effective plugin for you to display related post at the end of each article and at the sidebar. For a no frills kind of plugin, this is a great choice.
Source:smashinghub.com