XMPP is complicated. I know Multi-User Chat works because I'm using it right now, though Server Info says otherwise. The chat is hosted on a different subdomain, though, so maybe that's why the functionality is not reflected under Server Info.
I know each XMPP Extension Protocol solves a problem, but the problems they solve are not necessarily obvious to new users.
The Transparent Labyrinth
What the heck. There are tables and chairs in the back of the theater? This is super nice!
The most important Gnome 3 extension: Dash to Panel
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