[brainfire]

So Conversations has implemented a feature that isn't in the protocol, but important enough that when the feature doesn't work, users are turned off?

Or it's part of the protocol, but design decisions lead to client interoperability problems?

Maybe there's a third answer, but both of these are problems with XMPP.

[jhasse]

It's part of the protocol, but many clients don't implement it correctly.

[jimktrains2]

Multi user chats/chatrooms are part of the protocol though.