Look, I'm sorry if you found that obnoxious, but I'd rather not stress this point further. As far as I'm concerned it's marginal to the discussion. Besides, I really should have gone to sleep some two hours ago. Can you just confirm whether you understood my point (not agreement or disagreement, just understanding), and leave it at that?
Oh yes, I understood your point. I just disagree with it and disapprove of how you stated it :-).
For example, what would be inappropriately off topic to post to LessWrong discussion about?
I couldn't find an answer in the FAQ. (Perhaps it'd be worth adding one.) The closest I could find was this:
However "rationality" can be interpreted broadly enough that rational discussion of anything would count, and my experience reading LW is compatible with this interpretation being applied by posters. Indeed my experience seems to suggest that practically everything is on topic; political discussion of certain sorts is frowned upon, but not due to being off topic. People often post about things far removed from the topics of interest. And some of these topics are very broad: it seems that a lot of material about self-improvement is acceptable, for instance.