If you've ever seen that 'encyclosphere' project and agree that the centralized nature of wikipedia is an issue, but worry about immense cost-overheads with developing a website, consider: We make our own wiki articles on gemini://wiki.your.tld/Article.gmi
Then we each run a server which proxies requests made to gemini://wiki/Article.gmi -- programmed proxy requests to other servers.
Each article should start with its canonical URL, and end with the license of the article.
So I just write a few articles, then set up a priority list of other servers I trust. If I don't like someone's article, then I just copy it and modify.
Users can either edit their hosts file, or change the proxy setting in their gemini client. They set it to the one whose editorial standards they agree with.
And when you're writing an article, ALWAYS use relative links when referring to other wiki pages. That way the proxy-er can choose where the user goes.