I've read all of bash.org. I even know several of the mods/admins. Want a funny site to read? Try the newest one I'm being amused by:
http://www.4q.cc/vin/index.php
M73A: as often as possible really; the mods work very hard but you should see the amount of lame submissions they have - duplicates, stupidity, inanity, insults even. It's updated when a mod finds a good enough quote to approve but bash has become such a phenomenon that its inundated with submissions. The mod I know best has approved like 400 out of the 50000 quotes he's gone through or some other such ridiculously low percentage.