Used to force people to leave a room. The comment field is not required but will be sent to the client after they have been kicked. Only people who are opped in the room, AOPs and higher or those moded +o, can kick others out.
Example:
/kick #webmaster Phillip Don't flood this room.
The room's ops may kick anyone for any reason, but this command should be reserved for people who are causing problems in the room. In general, rooms that kick frivolously become less popular. It is good to put an explanation of the kick in the command, because it helps the person being kicked learn how to behave acceptably in the future.