What is IRC?
It's short for Internet Relay Chat, a client-server based chat system. Only a year younger than the current guildmaster, it's one of the first client-server-based webchats in the internet. The server is hosted by mana and you can connect with a client.
I don't have a client!
Or you can throw "IRC client" into google and check out what's out there - hexchat works fine, for example.
What can it do?
- use it to chat
- register your nickname by typing /ns register password email, then set the password in your client or sign in via /ns identify password
- group more nicknames to your main nickname by /ns group yourmainnick password
- join or create channels by typing /join #channel
- whisper people by typing /msg nickname
- emote by writing /me does something
... and much more.