Articles and Happenings is my favourite because it combines just the right blend of shitposting to content to make it consistently funny and ensure there's enough material about to let it maintain it's funniness without descending into a feedback loop of self-reference, and a lot of the news articles are genuinely interesting stuff that I might not have discovered otherwise. If the topic warrants an actual discussion it tends to happen, but it has to happen organically. If everyone was mandated to write a dissertation on the topic just to make any post at all, then every thread would be one or two posts each, or else bogged down with vapid filler.
Hangly tried minimum post lengths, and so did BRIAN!!!!! over at MPC. Let that sink in for a moment.