Basically, I started by visiting Stack Overflow to ask questions, I thought you could ask anything but then realised that it was only for programming and there are sub-sites like:
- math.stackexchange.com
- raspberrypi.stackexchange.com
- superuser.com
Which all pretty much have the same defining UI (although, some are unique to the topic).
So my question is this:
Does someone own the entire sites, or, are there individual people who think of a topic which could be useful or popular and decide to open it by themselves following some StackExchange rules?