UK Linux User Groups runs an IRC server for real time chit-chat on Linux type stuff and all are welcome to participate, the irc server is irc.lug.org.uk and the main channel we use is #linux.
Below are links on how to setup an IRC client. Popular IRC clients (linked below) include XChat, Pidgin, irssi and EPIC on Unix, and XChat & Pidgin under Windows. There's also a Java based IRC client, and one that runs entirely in a browser over HTTP (CGI:IRC).
Here are some links to help you get started with IRC.
Connecting
The irc server is at irc.lug.org.uk and the main channel we use is #linux however many LUGs have their own channel, for example Hampshire LUG uses #hants, Surrey uses #surrey and Kent uses #klug. Of course many other channels are available.
Join the #linux channel by entering /join #linux and then chat away!
To leave and disconnect from the server, type /quit
For help, use the /msg nickserv help command.
Have fun and enjoy! :-)