But what channels are worth joining ? Which ones actually have anyone one them and which ones can you find games on ? Quakenet's search function is less reliable than my RG, so it'd be great to get a list.
#quakelive - general chitchat. It's where mods and ID staff hangout. Always busy.
#quakelive.support If you got a problem people might be able to help you there.
Find a game : pickups
#tdmpickup - always busy. Find a TDM game !!! Also see http://www.tdmpickup.eu/
#qlpickup.eu -european pickup (most active for CTF)
#qlpickup.<x> (replace x by the letters representing your country, exemple : #qlpickup.fr for france pickup)
#discord for 3v3 SpaceCTF pickup
#instagib.ql mainly for iCTF pickups, but also iFT (tx for the tip kry)
#playquake for 4v4 CTF, TDM and CA. CTF games seem to start pretty quickly here.
#wolfcamQL - all you need to know about the awesome WolfCam
#leveldesign.nl for everything mapping related
Live feeds + tourney stuff
#lvl^ and #live.ql - quake live game streams
#esl.quakelive - very active during esl/iem competitions
#zotac.qlive - Zotac duel tournament channel (every Sunday) http://qlive.cups.gamesports.net
#TheBeardTV - channel of the streaming site http://www.thebeard.tv/ sometimes you get QL (e.g. zotac) on it along with some metal music
#ql.tv - on gamesurge too
#holysh1t - cheers kanzo !
#hulk on irc.gamesurge.net obvious (cheers Pudrick)
#drunk swampy and the other alchoholics.
#clanchill (shameless plug). More active these days
#quakelive.fi - Finnish Quake Live channel, nothing much goes on there
I'll keep updating this first post as they come in.