I’m subscribed to frugal, archaeology, science fiction, stuff like that. The communities are still growing so it’s still a dice roll which will grow or die, but I try to help out by finding or making content.
The upside is that your voice doesn’t automatically get lost now.
But Reddit dismembered a lot of old niche forums by stealing their members tho so it’ll take a while to regain a similar amount of old niche knowledge.