(I sit in a small, damp, cellar in a faraway place with nothing for company but the occasional inquisitive neighbourhood cat, all-too-rare visits from technical support -- as some users may have noticed -- and an updated list of tyre pressures...)
This site is owned and operated by a small media company that is in turn part of a big media company. Nobody's going to get rich from the advertising revenue (or if they are, they haven't told me) but we do have a number of commercial opportunities open to us. Don't worry, no changes envisaged to the current site or system.
As to how it works? It works because people are in turn inquisitive and helpful. If you get your question answered, quickly and acurately and maybe even with good grace and humour, you're more likely to come back and help the next person find the answer they're looking for. It's the kind of thing the Internet was made for, if you ask me. Simple, straightforward, thoughtful.
A timely question, brawburd, as you know. Hopefully all users can concentrate on what the site does best.