An open SSB room, click 'create new invite' above to join the room in Manyverse or Planetary or any other client!
NOTICE: If you are just starting out follow everyone you can, and if you're a current member and see new people joining the room, go ahead and follow them so they can get connected sooner, you can always unfollow (and even block) later.
Find other open SSB rooms here
If you want to help with the cost of the server, here's my Kofi
Just try not to be evil, but other than that everyone is invited, with the following exceptions:
Bloated accounts that cause syncing problems will be banned.
Accounts posting porn will be banned.