We had to exclude [dead] and eventually even just [flagged] posts from the public API because many third-party clients and sites were displaying them as if they were regular posts. […]
IMO this issue is existential for HN. We've spent years and so much energy trying to find a balance between openness and human decency, a task which oscillates between barely-possible and simply-doomed, so the idea that anybody anywhere sees anything labeled "Hacker News" that pours all the toxic waste back into the ecosystem is physically painful to me.
— dang