XMPP service.. any details?

The main landing page mentions XMPP but gives no overview. Nor does the wiki. The sidebar for meta says:

Our XMPP support chat: Movim or XMPP client.

Is there a slrpnk.net xmpp server that our creds work on? Or is this just an XMPP channel for getting support?

At first I was imagining some slick gateway of sorts that would stream realtime Lemmy activity into an XMPP channel, but I think my instincts might be wrong on that.