This marketization of personal information is a big mistake.

I worry that as the problem-solving power of our technologies increases, our ability to distinguish between important and trivial or even non-existent problems diminishes.

As Barbara Streisand discovered, adopting a militaristic posture against a tech-savvy mob of civil libertarians is not going to be of much help: Many of them run their own servers and blogs - and have thousands of friends on their social networks - so overzealous attempts to silence them only lead to wider dissemination of sensitive information.

The implications are clear: Facebook wants to build an Internet where watching films, listening to music, reading books and even browsing is done not just openly but socially and collaboratively.

North Korea aside, most authoritarian governments have already accepted the growth of the Internet culture as inevitable; they have little choice but to find ways to shape it in accord with their own narratives - or risk having their narratives shaped by others.

Sleephackers go to bed with sensors on their wrists and foreheads and maintain detailed electronic sleep diaries, which they often share online. To shift between sleep phases, sleephackers experiment with various diets, room and body temperatures, and kinds of pre-sleep physical exercise.

I'm active on Twitter, and I love my iPad and my Kindle.