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.

A lot of the geeks in Silicon Valley will tell you they no longer believe in the ability of policymakers in Washington to accomplish anything. They don't understand why people end up in politics; they would do much more good for the world if they worked at Google or Facebook.

I went to SXSW in 2011. God, that was awful. I mean, I only went because my publisher wanted me to promote the book and the organizers invited me and it seemed silly not to go, especially for a relatively unknown first-time author. This is just not my cup of tea; the fewer such events I do on an annual basis, the happier I feel.

Steve Jobs was notoriously blunt about products he found wanting, but his attack on Flash - Adobe's popular technology for playing multimedia content inside a browser - was particularly vicious. Claiming it was buggy and insecure, Jobs banned it from the iPad.

Search without Google is like social networking without Facebook: unimaginable.

You know, anyone who wears glasses, in one sense or another, is a cyborg.

This is the real tragedy of America's 'Internet freedom agenda': It's going to be the dissidents in China and Iran who will pay for the hypocrisy that drove it from the very beginning.