This, pseudonymous de-centralized discussion groups and forums, is what I would pick as the one thing I would like to bring back to the internet. There used to

This, pseudonymous de-centralized discussion groups and forums, is what I would pick as the one thing I would like to bring back to the internet. There used to be a forum about everything, each one it's own community, most of which didn't require ties to a real-world identity. I'm sure they exist, but they are really hard to find.