Social media is itself as temporary as any social gathering, nightclub or party. It's the people that matter, not the venue. So when the trend leaders of one social niche or another decide the place everyone is socializing has lost its luster or, more important, its exclusivity, they move on to the next one, taking their followers with them.

The competitive advantage professional journalism enjoys over the free is just that: professional journalists, whose paid positions give them the time and resources they need to commit more fully to the task. If we can't do better, so be it.

Files on iTunes - and thus iPods - are incompatible with everything else. Applications on iPhones may only be sold and uploaded through the iPhone store - giving Apple control over everything people put on to the devices they thought they owned.

Think 'Game of Thrones.' In the old days, this sort of show might be considered bad writing. It doesn't really seem to be moving toward a crisis or climax, it has no true protagonist, and it's structured less like a TV show or a movie than a soap opera.

'Digiphrenia' is really the experience of trying to exist in more than one incarnation of yourself at the same time. There's your Twitter profile, there's your Facebook profile, there's your email inbox. And all of these sort of multiple instances of you are operating simultaneously and in parallel.

The 'looking forward' so prevalent in the late 1990s was bound to end once the new millennium began. Like some others of that era, I predicted a new focus on the moment, on real experience, and on what things are actually worth right now. Then 9/11 magnified this sensibility, forcing America as a nation to contend with its own impermanence.

New technologies are wreaking havoc on employment figures - from EZpasses ousting toll collectors to Google-controlled self-driving automobiles rendering taxicab drivers obsolete.