"The latest source of my dilemma is Twitter, which lets you spit out real-time reports about what you're thinking and doing. It's fun to track the digital ejaculations of selected Twitterati. But a couple thousand people signed up unsolicited to follow my tweets. And I feel guilty when not serving this hungry crowd—remorseful when I am.

Since I don't know many in this mob, I try not to be personally revealing. Still, no matter how innocuous your individual tweets, the aggregate ends up being the foundation of a scary-deep self-portrait. It's like a psychographic version of strip poker—I'm disrobing, 140 characters at a time."