There's absolute mass quantities, as Beldar the Conehead might say.

It's easy enough to guess that plenty of people just grabbed a community name in case they might find it useful one day, but I'm guessing plenty of others legitimately started up a community, put some effort in to it, then ultimately got discouraged and abandoned it. A big part of that likely due to not being able to attract many subscribers and contributors.

Personally what I've found is that if you really want a community to grow, you need to seed it with content on a regular basis; preferably daily. Posting bots are probably a good way to help with that, altho if the sub looks like it's little more than bot posts, I don't think users will be inclined to post or comment much.

What I haven't quite figured out myself is how to incline users to post on their own, but hopefully with time that issue will kind of resolve itself due to sheer user count.

Btw, see here:
https://lemm.ee/c/fedigrow

There's a really cool one I used to love called The 13th Floor that used to be active and then one week the mod and his friends disappeared.

After the mod was gone for a month I took over moderation to protect it from spam or deletion, but I have other projects so can't really do it justice. I would love it if it got a new lease on life.

Link for Lemmy.

Link for kbin.

Regional Lemmies. Not holding my breath.

While we have tons of DND meme channels and some dedicated to tabletop RPGs in general, I would really love to see lemmy.world/c/dm_academy flourish. I got invaluable tips and feedback to the campaign I'm GM'ing.

AAP sounds interesting, so here's a link for others who want to see it (yours wasn't clickable for me) - !albumartporn@lemmy.world

Communities for underground music and the one for roller skating.

!movies@lemm.ee

There is some activity, we even had an AMA with a director/actor, but the discussion threads dedicated to movies struggle to get comments (the one notable exception being Dune Part II)

c/goblincore would be nice to revive. I was doing some posting but I am not a goblin and not that good at picking content.

All of them.

I browse All and see the same shit I saw earlier far too soon.

Thank you for sharing and I’m glad you like the community! It’s sad for me too that people don’t post/comment much. I posted a lot in the beginning but now I’m letting people post more as I see it having quality over quantity. I would make more interactive posts if I had the time, but anyone is free to do it :) For example, there was someone posting they favourites hip-hop albums of the month

HobbyDrama

There was a Berserk community, but searching for it now I couldn't find it. I really liked some topics on the Berserk subreddit. Here I feel like Guts get no love. Just like in the manga

I'm heavily interested in Bluesky, so I started !bluesky@lemmy.ml. However, Lemmy is overall pretty hostile towards Bluesky, and I'm not willing to go back to Reddit for active discussion about it.

https://lemmynsfw.com/c/sounding