Hi Chris,

The way the related content block works is that it finds related content based on the criteria you check off on the form in the screenshot. For instance, if you check off "title" and you have a new story entitled "Calvin and Hobbes go to the movies", it will show related forum topics (or any other node type by default) which have the words "Calvin" or "Hobbes" or "movies" in the title. If more than one of those words show up, it will likely come higher.

I think Peter's suggestion was to have only one box checked "Taxonomy term names only from the Forums category". This means that it will only find related nodes which have the same terms applied to them as the node being viewed. Since all the terms have to be from the Forums category, and I assume that only forum topics have terms applied from the forums category, this would only show on forum topics.

Unfortunately, this isn't what you want, and what you're looking for (find related nodes which are of type X) is not a feature that Acquia Search provides right now. Of course, the APIs are available to code up something like this if you have a developer on staff or would like to hire one of our partners to do it.

I hope that helps, and sorry it isn't the answer you were looking for.

All the best,
Jacob