More from the same essay:

Friendship is devolving, in other words, from a relationship to a feeling—from something people share to something each of us hugs privately to ourselves in the loneliness of our electronic caves, rearranging the tokens of connection like a lonely child playing with dolls. The same path was long ago trodden by community. As the traditional face-to-face community disappeared, we held on to what we had lost—the closeness, the rootedness—by clinging to the word, no matter how much we had to water down its meaning. Now we speak of the Jewish “community” and the medical “community” and the “community” of readers, even though none of them actually is one. What we have, instead of community, is, if we’re lucky, a “sense” of community—the feeling without the structure; a private emotion, not a collective experience.

So information replaces experience, as it has throughout our culture. But when I think about my friends, what makes them who they are, and why I love them, it is not the names of their siblings that come to mind, or their fear of spiders. It is their qualities of character. This one’s emotional generosity, that one’s moral seriousness, the dark humor of a third. Yet even those are just descriptions, and no more specify the individuals uniquely than to say that one has red hair, another is tall. To understand what they really look like, you would have to see a picture. And to understand who they really are, you would have to hear about the things they’ve done. Character, revealed through action: the two eternal elements of narrative. In order to know people, you have to listen to their stories.

But that is precisely what the Facebook page does not leave room for, or 500 friends, time for. Literally does not leave room for. E-mail, with its rapid-fire etiquette and scrolling format, already trimmed the letter down to a certain acceptable maximum, perhaps a thousand words. Now, with Facebook, the box is shrinking even more, leaving perhaps a third of that length as the conventional limit for a message, far less for a comment. (And we all know the deal on Twitter.) The 10-page missive has gone the way of the buggy whip, soon to be followed, it seems, by the three-hour conversation. Each evolved as a space for telling stories, an act that cannot usefully be accomplished in much less.