I lurk there sometimes. It's usually pretty quiet. Sometimes there are several people on there not talking to each other, heh heh. But occasionally somebody might break the silence and start a conversation!
IRC channels work in a different way. The trick here is to join the channel and continue with the stuff you were doing. If someone pops in, drop a casual "hello"; if someone else is interested in carrying on with the discussion, fine. If not, back to work. The mistake folks make is to join the channel, steady their hands on the home row of their keyboard and eagerly wait for someone to type something enlightening, which of course doesn't happen. :)