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.

In the past it would take you weeks, if not months, to identify how Iranian activists connect to each other. Now you know how they connect to each other by looking at their Facebook page. KGB ... used to torture in order to get this data.

However revolutionary it may be, the Internet still hasn't altered the basic law of human communication: Being nice to your interlocutors is a good way to start any negotiations, particularly, when being hostile is an open invitation for a cyber-fight.

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

As befits Silicon Valley, 'big data' is mostly big hype, but there is one possibility with genuine potential: that it might one day bring loans - and credit histories - to millions of people who currently lack access to them.

The global triumph of American technology has been predicated on the implicit separation between the business interests of Silicon Valley and the political interests of Washington.

Dictators aren't stupid, or regimes could be toppled easily by young people mobilizing on Facebook.