Online advertising may not be much more successful than an old double-barrel, but - like a good spray of buckshot - it makes up for its lack of accuracy with sheer volume. There are 10 unique ads listed with every Gmail message in your queue, each tied to the message content. And a paying sponsor.

With the DVR, I was mostly writing about it as a good thing in giving us the choice of when and how to watch things. But there's what we lose in the bargain, which is the collective spectacle. 'Did you see Jay Leno last night?'

We know that people are less open in conversations if the other conversant puts a cell phone on the table. Even if it's turned off. The sign is enough to close the mind and make a prospective client or lover less likely to do what you ask. As people realize this, they'll start putting away phones or turning them off.

Facebook's successor will no doubt provide an easy "migration utility" through which you can bring all your so-called friends with you, if you even want to.

Our enthusiasm for digital technology about which we have little understanding and over which we have little control leads us not toward greater agency, but toward less...We have surrendered the unfolding of a new technological age to a small elite who have seized the capability on offer. But while Renaissance kings maintained their monopoly over the printing press by force, today's elite is depending on little more than our own disinterest.

Corporations [gained] direct access to what we may think of as our humanity, emotions, and agency but, in this context, are really just buttons.

Virtual simulations allow post-traumatic stress disorder sufferers to re-experience the events that traumatized them, and then slowly desensitize themselves to their impact through repeated recreations involving not just sight and sound but even smell.