Ten years ago we were writing e-mail messages on desktop computers and transmitting them over dial-up connections. Now we are sending text messages on our cellphones, posting pictures on our Facebook pages, and following complete strangers on Twitter. A constant stream of mediated contact, virtual, notional, or simulated, keeps us wired in to the electronic hive — though contact, or at least two-way contact, seems increasingly beside the point. The goal now, it seems, is simply to become known, to turn oneself into a sort of miniature celebrity. How many friends do I have on Facebook? How many people are reading my blog? How many Google hits does my name generate? Visibility secures our self-esteem, becoming a substitute, twice removed, for genuine connection. Not long ago, it was easy to feel lonely. Now, it is impossible to be alone.