[the_axiom]

Only my own messages are in my PDS? Or the entire chat?

How is the chat displayed if messages are scattered among multiple PDSes?

What about the community metadata, where is it stored?

[louisescher]

Your own messages are on your PDS. The chat, the category, community and all metadata are stored on the PDS of the person who created the community. The chat is then displayed via our app view, which keeps a live index of all messages and provides some endpoints to collect them!

[kevinak]

So if a user is banned from their PDS and they haven't backed up their keys, the community is screwed? That seems like a pretty big flaw.