Ah, I'll repeat what I've said on this topic in the past. In my opinion: "I like chaff. It's interesting, funny, very human, odd, quite intelligent, stupefyingly inane. It's the BPL soaps (only much better than General Hospital!). Or, it's the cheap beer portion of BPL -- a bit of it makes your head feel a little fuzzy, but too much of it and you'll regret it in the morning."
I'll add this: I think those of us who see BPL as a community tolerate, and even enjoy, chaff more than those who do not see BPL as a community. And I don't just mean a community of backpackers, but rather a community of people who first met through their love of backpacking, but have become friends. Friends like to chat about all sorts of things, not just one thing. Chaff allows us to do that, to simply be silly and have fun with our BPL friends. It is, perhaps, my favorite forum, because it's in chaff where we REALLY learn about each other. FWIW.