Daplunk, on the second video, you missed (I believe) the main use case. You need to have a topic previously created that did not auto-link because the term had not been created yet. For example, you have a topic that discussed 'ranger' but you haven't created the 'ranger' topic/article yet. Now you create the ranger topic/article and you want to scan your database for where you already used that term.

I think this is where the feature is completely and totally awesome.

Good point :) I shall put that in.

That will be of great utility to world builders.

Of equally great utility will be people who buy content from the same publisher over time. Each time they add a part of the campaign world a scan for new links on the entire realm will find all the times things were mentioned in content that have now become topics. This feature gets rid of most of the need for various complicated schemes for how handle building those big campaign worlds.

New video released last night. Focuses on the difference between the World Almanac and Story Almanac and creating topic views etc.

Realm Works - World Almanac, Story Almanac and Mechanics Reference