Stack Exchange is an interesting example. they have a complex nomination and incubation system in place to figure out what sub sites to add. this ensures that t

Stack Exchange is an interesting example. they have a complex nomination and incubation system in place to figure out what sub sites to add. this ensures that they only sites when is a proven community to jump in. They have a very mature software stack that relies on a complex point system to automate curation. HN is much more of a one-man show