User blog comment:Brandon Rhea/Wiki domains will be changing from wikia.com to fandom.com in early 2019/@comment-190.178.167.242-20181015004939/@comment-4738647-20181021014200

On point.

I've seen them:
 * Make News/Blog posts about of topic without linking to the Wikia about that topic (they're supposed to help the communities).
 * Have people who don't contribute to the wikis make the blog posts on the wiki's topic.