What is IRC?
Internet Relay Chat (IRC) is one of the most popular and most interactive services on the Internet. Sure, the Web is nice for finding info and E-mail beats snailmail hands down, but when you've been wondering 'where the others are?', then IRC is what you're looking for.
IRC is the net's equivalent of CB radio. But unlike CB, Internet Relay Chat lets people all over the world participate in real-time conversations. IRC is where the Net comes alive!
Using an IRC client (program) you can exchange text messages interactively with other people all over the world.
Mirc, Pirch, Virc, XChat for Windows
--> see also Internet Relay Chat , BitchX , Irssi , Xchat , ChatSlang , IrcQuotes , EfNet , VHosts, Mirc , MircScripting , TclScripts
If u have Java installed, u may use this Applet to enter the Efnet without installing any client.
RecentChanges on IRC
You can watch the RecentChanges on IRC, Efnet in #wiki (again).
The method is described here. Mediawiki creates UDP packets and then you can just get them with netcat and pipe them into ircii, they are formatted ready for IRC.