There was a Buffy forums a several years ago where some members physically sent each other gifts (that was before it was possible to buy gift keys of books and software online), they even visited each other. And I'm not talking from one town to the next, I'm talking visits across the Atlantic. That forum was even responsible for the creation of a few families.
For some reason the members of that forum were incredibly mature and I'm not talking about their ages. I really miss it. It went down during an upgrade a couple of years after the series ended, the owner, who did not made money beyond what was needed to host and maintain it, never put it back up. There was a couple of tries from the community to host it on free forum sites but it was not the same.