What niche reddit community do you want to see find a place on the fediverse?

r/zillowgonewild, r/mcmansionhell, r/lastfm, and r/humansarespaceorcs have always been fun places for me. History-centric and hyperlocal neighborhood-level subs, too.

I also like most of the circlejerk subs. Maybe straightforward communities here will be less self-serious, thus making [blank]jerk counterparts unnecessary.