A review of three books — The App Generation, Status Update, and It’s Complicated — that explore and critique the function of social media in our lives.

I used to ask the internet everything. I started young. In the late 1980s, my family got its first modem. My father was a computer scientist, and he used it to access his computer at work. It was a silver box the size of a book; I liked its little red lights that told you when it was on and communicating with the world. Before long, I was logging onto message boards to ask questions about telescopes and fossils and plots of science fiction TV shows.

I kept at it for years, buying new hardware, switching browsers and search engines as needed. And then, around 2004, I stopped. Social media swallowed my friends whole, and I wanted no part of it. Friendster and Myspace and Facebook—the first great wave of social networking sites—all felt too invasive and too personal. I didn’t want to share, and I didn’t want to be seen. –Jacob Mikanowski, Prospect Magazine.