As the other person that replied indicated, *key is shorthand for Misskey and Misskey fork instances like Sharkey/Iceshrimp/etc.
There's a bunch of them and since many of the instances with primarily English or other language (besides Japanese) people on them aren't using Misskey (or any specific fork) it's easier to write *key.
I should have clarified that in the OP, but I hoped the body text would help with that. My bad!
@fediverse@lemmy.world
Ulrich@feddit.org 1 day ago
Lemmy instances with *key instances!
Huh?
VeSpectagles@sharkey.world 1 day ago
AwesomeLowlander@sh.itjust.works 1 day ago
This is you right now. Most of us have no idea what Misskey is.
Ulrich@feddit.org 1 day ago
I was more commenting on the fact that it’s an incomplete sentence. What does it have to do with Lemmy?
Mac@mander.xyz 1 day ago
Lemmy instances (verb) with *key instances (noun).
Threw me off too.
Apytele@sh.itjust.works 1 day ago
Misskey?
LeFrog@discuss.tchncs.de 1 day ago
Seems to be this one:
misskey-hub.net
Microw@lemm.ee 1 day ago
You read the post past that sentence?