And no, I don't mean literally speaking with them. Eww! Reality! I mean chatting with them, as the official World of Warcraft Mobile Guild app now supports a remote chat feature.
If you've got the app and are away from your computer, it allows you to not only access your guild's chat room, but have private conversations with other users and see who exactly is online at any given time. There's also a central calendar you can access during a chat.