I noticed my feed on Lemmy was pretty dry today, even for Lemmy. Took me a while to realize lemmy.ml has been going up and down all morning, and isn’t federating new posts.
But, since this is all still federated, I can still create and read posts on other instances while I wait. Even this one! Any other service would just be unavailable completely right now.
I do miss the larger communities on lemmy.ml - asklemmy, memes, and I really wanted to watch the reddit fallout on /c/reddit. Maybe I’ll look around for some good replacements for those. Open to suggestions!
It’s all a little arbitrary. When you create a new service (like Lemmy, or Mastodon), you can have them link with anything, in any fashion you like. The defaults are mostly sensible.
For example, I’ve just made a mastodon post asking /r/casual a question. Once that synchronizes across, you’ll see the topic over there.