There was a celebrity nudity message board I was a member of that had been running since the mid 90's that shut down late last year.

There's also a harm reduction message board that I joined in 2000. It was the center of my existence for years. I traveled all over the country hanging out with people I met on the board. Had a ton of fun, did a bunch of stupid things, ran from the cops a few times, almost died a few times... I even ended up shacking up with a girl I met on the board for a few years. This board helped me turn my 20's into a vague blur of gonzo madness... And it's still running. I'll pop in from time to time to see how it's going but it'll never be like it was back in the heyday. That's probably for the best though, since I'm too old for that life now.

Reddit mostly replaced a lot of the places I used to go. Now that I'm off Reddit I'm trying to find ways to get back into decentralized communities like those.