My guess is more intimate interaction. And Nuno is right, Branch is the first step towards that. With the Twitter API changes, Facebook's advertising debacle, MySpace completely lost, networks that help better connect the web to our lives will prevail. branch got started on the idea of dinner table conversations. As video, non, and fiber optic technology gets better, video chat will become a logic thing to implement. At the moment it's slow, low quality, and an awkward way to have a conversation. The next web will have video conversations that are comparable dinner table conversations.
In addition, if we look at history, after discovering something new it takes time to become organized. The next phase of the web will tagged and archived.