Easy, works just as described, non-intrusive

The Related Content by Wordnik plugin is great because it is easy to install and customize. It works just as described. It’s easy to customize for your blog. And, in my experience, whether you’re using a pre-made theme or your own theme (I use my own, FYI), it’ll integrate nicely and seamlessly. Most importantly, the plugin does an excellent job of providing related content to encourage your readers to click around and spend a little more time on your blog. ??