Diego has been on HN over 5 years and has enough karma to be able to downvote 10 times over. Dismissing his comment as a misconception of how HN works seems a bit ridiculous on your part. His observation is a legitimate one -- if there are no real limits on what material is appropriate, then how do we define ourselves as a community in a way that helps newcomers understand what is appropriate and how our litmus test differs from other sites?