Helping readers of your WordPress site find more of your content that may be interesting to them is one of the most requested features in WordPress. And it’s one of the hardest things to do, from a processing perspective. Here is where the Jetpack plugin from WordPress.com and its Related Posts feature comes in.
Analyzing language for similarities of content takes a lot of computing resources. Because of this, some hosts will block the use of most related posts plugins, and other hosting will just get noticeably slower when you run one. Jetpack does all of this processing on WordPress.com’s servers, so your site takes no performance hit when you use it for related posts. It’s also pretty quick to turn on, especially if you’re already running Jetpack. Here’s a video explaining how to help your readers find more of your great content: