Cloning and Bots First of all theres a difference between the two. You've probably seen them, like chanserv and nickserv on DALNet. A clone is a remotley controlled IRC'er as well, but it's main purpose is usually to assist someone in flooding. For those that aren't heres another diagram. He's flooded of the server forsending to much data to it.
Bots can do pretty much the same thing.
Your probably wondering now, well all this is fine and dandy, but how the hell do i make a clone or bot. Now that that's taken care of, you have to write a script. Heres a basic clone script that comes with instructions. By the way, most servers have clone detectors, so don't just run around cloning, or you may end up banned from servers. This one was hardest to learn about, since most of the pages that supposedly had info about were down.