mmmm IRC. IRC is good. I can be found on IRCNet, on #irssi, and on EFnet, on #exeter and #irssi.

You should use irssi as client. Read here why irssi is so good.

I've just released the test version of the dnsspam script for irssi, which, among many other things, can set automatic k-lines when a client with a dnsspam hostname connects.

JamesOff has written a few useful scripts for irssi. Check them out on www.jamesoff.net/irssi.