In China, Internet surveillance has already become a profitable industry. In fact, a growing number of private firms eagerly assist the local police by aggregating this data and presenting it in easy-to-browse formats, allowing humans to pursue more analytical tasks.

My fear is that many institutions will eventually alter how they treat people who refuse to self-track. There are all sorts of political and moral implications here, and I'm not sure that we have grappled with any of them.

There is no doubt that the Internet brims with spamming, scamming and identity fraud. Having someone wipe out your hard drive or bank account has never been easier, and the tools for committing electronic mischief on your enemies are cheap and widely accessible.

I'm not on Facebook. I have a sort of anonymous account that I check, like, once every six months every time Facebook rolls out a new feature.

Free open-source software, by its nature, is unlikely to feature secret back doors that lead directly to Langley, Va.

The director of the FBI has been visiting Silicon Valley companies asking them to build back doors so that it can spy on what is being said online. The Department of Commerce is going after piracy. At home, the American government wants anything but Internet freedom.

There is this absurd assumption that the revitalisation of the public sphere is always a good thing. I think people tend to confuse 'civic' and 'civil,' and they believe that everything that is done by citizens is necessarily a good thing because you build a network, an association.