If China's expansion into Africa and Russia's into Latin America and the former Soviet Union are any indication, Silicon Valley's ability to expand globally will be severely limited, if only because Beijing and Moscow have no qualms about blending politics and business.

Someone ought to publish a book about the doomsayers who keep publishing books about the end of publishing.

Military commanders do not want to be tried for war crimes, even if those crimes are committed online.

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.

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

Contrary to the utopian rhetoric of social media enthusiasts, the Internet often makes the jump from deliberation to participation even more difficult, thwarting collective action under the heavy pressure of never-ending internal debate.

Most other documents leaked to WikiLeaks do not carry the same explosive potential as candid cables written by American diplomats.