Alan Moore says in an interview:
I think communities form around 3 principle tenets.
1. Information
2. Entertainment
3. CommerceLets take the equine community, or the climbing community, the motivations for belonging are at a deep human level.
By creating platforms that can better serve these communities around these 3 tenets, one can build I believe sustainable businesses, that are not geographic specific.
Communities form around values, not demographics.