This plugin has a lot of promise but I can't get it to work. No related content is returned.
The plugin's settings page gives the following two messages:
There is no fulltext index for 8FPQAozlD_posts.post_content
There is no fulltext index for 8FPQAozlD_posts.post_title
I don't see any options to build any index or anything, so I'm not sure how to get around this.