As an aside, I got a job once based on my supportive activities on IRC. :)
I've used and run both IRC/reflectors and forums before, both have value. Neither is a guarentee of good info but active IRC tends to have a faster turn around time; moments instead of hours. But as noted you have to go to some extra effort to save the output though. Well, we all volunteer somewhere, so if there's not the enthusiasm for an active IRC channel then there's just not the option.
So far I'm fnding this forum software to be problematic. Multiple sign-ins, back buttons don't work, and the "remember me" capability seems hokey. I'm running FF 3.6 with a current Java plug-in, on Fedora. Could be me, but if other visitors have similar experiences then it becomes uninviting.
Leam