Just joined Lemmy today. From what I understand, there are different Lemmy instances that host different communities. I supposed that to interact in a community hosted in a certain instance, I would need to create an account for that instance. Ended up creating 10 different accounts.
Check out this instance list which gives you full stats of blocked / blocked-by, uptimes, downvoting allowed, etc.
https://github.com/maltfield/awesome-lemmy-instances
I’m on VLemmy which doesn’t block and isn’t blocked by any other instances.