Looks like there is already a thread about the chat and is even a sticky. Just thought I would post some commands which chatters may find useful.):
/me [action text] (This command puts your text just after your user name for when you want to talk as if it is something you are doing.).
/join [room name] (This command puts you in the chat room which you name in the command. If the room isn't already there then it will be made and you put in it by yourself.).
/invite [user name] (This command will pull the user you name into the chat room that you are in.).
/help (This command just gives you a list of the commands in the chat room, but it doesn't tell you the format they should be in or what they do.).
Extra notes:
Most other commands either can't be used or will crash your chat window. To use pictures in chat simply click the picture you want to use and the hotkeys for that picture will show in the text box but the pictures will show once you send the message. If you are the last person in a chat room other than the main room then the room will be closed and everything in it wiped when you also exit the room. In this thread you could post ideas for pictures or the pictures themself depending on how many the admins are happy to add. I drew some hoping other people would follow suit, so will leave any more wanted pictures to people with better art skills. Some people didn't know what mine were of,
. Size is 16*16 and file format in PNG. Also put text that you would like as the hotkeys for each picture you draw. I got the hotkeys for person and swords a bit wrong though it's no big problem.