Reminds me of Everything2. It started as a freeform text linking site, where nodes (pages) could be linked just like a wiki these days. It was written by some of the slashdot crew, back around 2000. The site grew and attracted a fun crowd who really liked the freeform wiki-like interface. Unfortunately some of the admins wanted to compete with Wikipedia, so the fun, frivolous stuff was discouraged over purely factual nodes. This meant that some people stopped contributing. I left around that time.
https://everything2.com/
Huh it's still going! It must be 25 years old now, not a bad achievement.