XMPP MUC also has the problem that the largest XMPP client, Google Talk in Gmail, afaik does not support it. It handles multi-user chats via some proprietary me

XMPP MUC also has the problem that the largest XMPP client, Google Talk in Gmail, afaik does not support it. It handles multi-user chats via some proprietary method that only works for Gtalk clients.