It's available on kbin and can be accessed (to some degree) via this very Lemmy instance: https://midwest.social/c/Buttcoin@kbin.social

I did just learn that users on lemmy.world can't access that community until a patch is installed that allows connecting to kbin magazines with capital letters in their names, so we have a leg up on them.

How does one get flair here?

Also, because I'm bad at image-memeing, blåhaj sounds like what you do when you've had a few and a cop pulls you over.

I hope that this doesn't lead to fracturing the way it apparently did on Mastodon, where every instance that federated with a set of known-bad instances was itself added to the list of "known-bad" instances that the main instances ought to de-federate from (or maybe it will have to be that way to keep out the trolls); to put it another way, I hope that whichever side ends up being the more useful one in this split (beehaw.org or lemmy.world & sh.itjust.works) is the one that midwest.social gets to keep federating with, if it comes to that, or else I'll need to bother joining beehaw or sh.itjust.works directly.

(I forget whether I had to go through an involved process to register on midwest.social, but I know it's not one of the instances with open registration.)

I joined a while back (after the rise of Mastodon following some edgelord's purchase of Twitter, although I had heard about both that and Lemmy long before), and I still probably won't be active on Lemmy until Reddit dies off; I joined this instance because it's the most relevant (nothing akin to Mathstodon, where I have the same username) and I was advised against just flocking to the main one.

I was most active on /r/learnmath and /r/Buttcoin and I might go to refugee communities related to both, and to things like /r/learnjavascript (where I was active until a few years ago, also as an answerer of questions) and /r/badmathematics.