Musician, photographer, computer nerd
Functionally it’s not very different. Everyone on a different federated server can access all the other “subreddits.” However, your account is hosted by the server you joined. If it were to go down, I suppose your account would disappear.
Good question, it varies by server. Beehaw.org for example limits sub creation to admins.
FTL for iPad. Just a brilliant game through and through that makes the transition from desktop to tablet perfectly.