It was a quick experiment in 2009, and soon forgotten by most. It's not linked from anywhere in the site's UI. It doesn't seem intended to be used anymore, and seems to exist as a historical artefact. Certainly nothing for people to be offended by.
Was there any discussion about that experiment at the time?
Again, mostly curious as to the reasoning, as this kind of thing would tend to go against fostering a community, which is what the idea behind HN seems to be.
