Three new or upcoming books look at our changing lives online.
Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives (Little, Brown) by Nicholas Christakis and James Fowler looks at how Facebook and Twitter as well as our networks at school and work powerfully shape our emotions, health, politics and more.
Free: The Future of a Radical Price (Hyperion) by Chris Anderson, editor of Wired magazine, examines online niche marketing and the counterintuitive notion that giving things away can be the way to make money.
Say Everything: How Blogging Began, What It's Becoming, and Why It Matters (Crown) by Scott Rosenberg, a co-founder of Salon.com and author of Dreaming in Code, is an insightful history of the online explosion of interaction and opinion.
Colette Bancroft, Times book editor