For miscellaneous discussions and remarks not suitable for top-level posts even in the Discussion section, let alone in Main.
(Naturally, if a discussion gets too unwieldy, celebrate by turning it into a top-level post, just like in the good old days.)
I'm reading Mere Christianity, and boy howdy is it a hair-puller. It made me so mad that on about page 90 he was talking about donating to charity until it hurts, which reminded me of the current SIAI fundraiser. I know that donating money out of spite isn't exactly the healthiest of actions, but I've got $1000 that says fuck him.
What exactly about it makes you angry?