WordPress Related Posts plugin
WordPress Related Posts Plugin will generate a related posts via WordPress tags, and add the related posts to feed.
To add WordPress Related Posts plugin to your WordPress blog
1. Download WordPress Related Posts plugin from this link.
2. Unzip and upload it into your WordPress wp-content/plugins directory.
3. Login to wp-admin. In your admin dashboard click plugins and activate the WordPress Related Posts plugin.
4. Then go to settings and click Related Posts.
5. Adjust your settings and click save changes.