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.
I mean you might as well in case something happens in one instance you have your username and profile ready. I like to hop between instances especially if one is slow or if it starts getting flooded with spam.