Facebook is Stickier than Peanut Butter
webpronews.com
webpronews.com
I think the genius of Facebook is not just the eliteness, but instead a new word I'll makeup called 'localness'. Facebook cordons off the scary, wild web and presents you with people that you know or could at least see yourself knowing or bumping into. Combine that with early entry into the social networking world, very strong and appealing UI, and yes, eliteness, and a few years later, you've got 18 million users.
Anyone suggested just paying 20 million users $100 each to join and use your social network for 1 month, hehehe, seems like you could 4 times as much money :-)
Facebook is a place. Think of it like Manhattan. What creates value isn't the population (the users). Nor is it the buildings (the technology). What creates value is the emergent social interactions and the culture that occur there. To put it in geek terms, it's not the instances of people, but rather what goes on in the interstices between them.
To quote Howard Rheingold, "The 'killer app' of tomorrow won't be software or hardware devices, but the social practices they make possible. The most far-reaching changes will come from the kinds of relationships, enterprises, communities, and markets that this future infrastructure will make possible."