HN is functionally like a single topic forum, which makes it a little easier to have rules about what is generally allowable content. Many single topic forums s

HN is functionally like a single topic forum, which makes it a little easier to have rules about what is generally allowable content. Many single topic forums still exist, though in recent years have had to take a back seat to Reddit et al. Maybe if Reddit goes completely to pot, people will look them up again.