Welcome to the CommunityWiki!
We talk about communities both online and offline: management, teaching, conflicts, mediation, and some tech talk mostly about tools used for online communities.
Feel free to join in. See WelcomeVisitors to get started as a contributor.
In spring 2017, yet another Twitter alternative was making the rounds, Mastodon.
There are many ways to structure content globally. All of GlobalContentStructuringMethods can be relevant in wikis.
There are only few ways to structure content locally, in a WikiPage.