Picture taken at the iOS conference out at Hoffman. In case it's not clear, there are a bunch of peeps on the floor, huddled around a power outlet as they multitask while listening to the Apple presenters. I was struck by the similarity between the above, and this:

People ( or animals ) will gather around resources of value. They'll endure hardship if the value is great enough, they'll take social risks. They'll cluster together, and develop their own norms and whatnot.

Our customers are the same way. They gather in places where they find value. If we happen to build a sucky watering hole, or maybe just one in the wrong place, our customers will gather at some other watering hole instead.

The trick is identifying a need, serving that need, and nurturing the community that starts to form there.