This server isn’t the only one I’m running in the Fediverse :-) I’m currently running these:
https://lemmy.world: You’re looking at it.
https://mastodon.world: My largest server, over 160.000 users.
https://musicworld.social: Another Mastodon server about 1 of my hobbies
https://pool.social: Another Mastodon server about another hobby of mine
https://fotofed.nl: A Pixelfed instance
https://calckey.world: A Calckey server. A bit different from Mastodon.
https://fediland.nl: A Misskey server. Calckey is forked from Misskey, personally I like calckey better.
https://play-my.video: A Peertube server
https://akkoma.nl: An Akkoma server (kind of lightweight but fully featured Mastodon)
https://ruud.social: Akkoma server just for me
https://blog.mastodon.world: My writefreely server, yes that federates too.
More to come probably…
I’m finding Kbin more interesting than Lemmy on trying both. I can do all the Lemmy stuff but also follow people, microblog & various other things on Kbin that Lemmy doesn’t do. Especially Kbin sees posts from around the Fediverse, Lemmy just sort of only sees thread types and gets no content from most of Fediverse, which seems a bit closed and sad. My feeling is Kbin seems quite a bit more integrated in to the Fediverse. Rapid dev pace is always appealing too. Just my impressions so far.