I downvoted because I disagree with pretty much every item.
Do you hold that pretty much anything of interest and importance to a substantial number of smart people is (potentially) on topic here, or do you have narrower preferences that just happen not to exclude any of the things FrameBenignly is suggesting don't belong?
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.