So, the instance I joined Lemmy on last week largely to participate here defederated from lemmy.world an hour ago. It’s early post-Reddit days, which is the only reason I’m posting a general tech tip in /r/!austin, but it’s a previously impossible inconvenience that isn’t theoretical. Choose wisely or start your collection of alts early!
As someone who is going to move a subreddit over to Lemmy, this is a really good idea. I could just host that one on my own, and if I don’t add people to my server, I could make sure that it doesn’t get overloaded. People could connect from other federated servers to view and make posts/comments.
That’s what StarTrek has done. The various StarTrek subs have closed permanently on Reddit and all moved together to their own Lemmy instance, startrek.website.