Right. For newfound Twitterers, if they have no vested interest in those already publishing, there's no reason to stay. Twitter serves two purposes: Follow othe

Right. For newfound Twitterers, if they have no vested interest in those already publishing, there's no reason to stay. Twitter serves two purposes: Follow others, and broadcast yourself to others. New twitter users must construct both of those social graphs by hand, and for most people who just heard about twitter on TV, it isn't worth the effort.