We have an IRC chat channel that lets you chat with fellow Mythians in-game! You can join in with any IRC client at chat.freenode.net
on the channel #MythicaCraft
or you can use the built-in client below: Just click "Connect" in the middle! You won't be able to speak until you have verified yourself with your forum password. When you join, Spirebot will automatically private message you to show you how to do that.
We also have a TeamSpeak server for voice chat. It's just like Ventrillo but cross platform. Join in at ts.mythicacraft.com