Aaron Swartz‘s Bubble City, Chapter 8:
He sent the report to his superior and wandered off for a bit to dwell on the power he had as a faceless person deep inside an office park in Mountain View to know every detail of another person’s life. He wondered what it would be like if he came across that person on the street, he would know every detail of his life, his household budget, the secrets he confided over IM, even what he looked like naked.