Incidentally, I set up an IRC channel for this.

<[b][url=http://widget02.mibbit.com/?settings=c2129339a43d8c49d86c34fa8dff7610&server=irc.foonetic.net&channel=%23Waaagh]Chat[/url][/b]>

Same server as the Guild chat, in which case, just type '/join #Waaagh'