IRC chat (undernet) is like "AOL chat", but free and vast.
You use a 'client' (Irc program) to connect to a huge 'undernet' of servers. Lots of places 'host' IRC chat, so if we go to ANY undernet host, we can chat with a moped army member on any other IRC undernet host server.
Running a bot means that not only will the room always be 'open' but you can send it 'command lines' like
PedBot: Slayback was last seen 22 minutes ago
PedBot: HaySoDumb has been banned from Moped Army Chat
Get it? Yes, I'm a geek.