Interesting piece in The Economist:

> People are not tiring of the chance to publish and communicate on the internet easily and at almost no cost. Experimentation has brought innovations, such as comment threads, and the ability to mix thoughts, pictures and links in a stream, with the most recent on top. Yet Facebook, Twitter and the like have broken the blogs’ monopoly. Even newer entrants such as Tumblr have offered sharp new competition, in particular for handling personal observations and quick exchanges. Facebook, despite its recent privacy missteps, offers better controls to keep the personal private. Twitter limits all communication to 140 characters and works nicely on a mobile phone.