IRC stands for internet relay chat. It is an older chat protocol that this site's chatroom uses. Just because it is old doesn't mean it is bad however as IRC is much more powerful than the other chat systems when it comes to chat rooms.
Advantages to IRC:
*Chatrooms (known as channels) can be made invisible to the master list as well as password protected for security.
*Channels can have operators, these are the people in charge of the room.
*Chatroom is always open. No need to worry about if a chat is going on or not and no need to worry about making sure everyone is invited to it. TO join the room you simply go in.
*Operators can kick people out of a channel as well as ban users based on hostmask.
*Nicks can be registered with a password and the real owner can kick an impostor with it.
*Filesharing servers can also be created. (We can do this with ftp servers as well, I forget if cfc has secure uploads or not).
*No need to download additional software, the java chat client on this site is good enough for most users.
*I have a delightful quote script with humorous sayings from members of the cfc community ^.^
If IRC is used I would be more than happy to develop a quick user guide and post it in the forums.