Millennials spend a lot of time online, but what exactly are they doing? One recent study delved into their internet behavior to find the three most popular activities among 18-34-year-olds: checking and sending email, keeping up with what friends are doing, and streaming music, TV, or movies. 56% shop or research products online, and 45% regularly play games. The survey also found that while Millennials don’t worry very much about online privacy, with only 20% saying they worry “a good deal,” 86% have changed their behavior online to control how much others can find out about them. (Wall Street Journal)