View all 2 here:
It's like group chat for Mastodon.
This is an ActivityPub server that can interact with
any other ActivityPub server, including Mastodon. Every account created here is a Group account, which is a kind of bot for mass communication across servers.
You can create a Group for anything!
Any post addressed to a Group by a follower gets reposted
by the Group, so all followers can see it.