Exactly. Facebook fills a certain need reasonably well at the moment, and it's massive because of the network effect. But I have no difficulty imagining much be

Exactly. Facebook fills a certain need reasonably well at the moment, and it's massive because of the network effect. But I have no difficulty imagining much better things arriving in the next 5-10 years. Same deal with Twitter. All the successful "social" stuff captures and defines how we're using technology now, but that changes very quickly.