Honestly, Miraheze is interesting to me, as it's basically just fandom in a Wikipedia format. However, I have some questions about it:
I'm not going to start any articles about the platform, this is mostly just out of curiosity.
Check out their website directly and Discord channels. It has (too) little media coverage. It seems to be exponentially growing in volume, but maybe not as fast in quality of content and resources to support it. If you can help I think they would appreciate any help they can get. I also think Wikimedia should help and open up a more direct connection then just via individual Wikimedians and MediaWiki folx.
"as it's basically just fandom"
Well, that's part of what Miraheze does. They also host wikis that Fandom wouldn't touch, and host private wikis.
"What is the biggest "wiki" that the platform hosts?"
All The Tropes is at least an order of magnitude larger than any other wiki they host, and has been since Orain ceased operations.
(Fair disclosure; I'm a mod on All The Tropes.)
