When I tell people that I’m a Twitter fanatic, there’s one question they always ask me: “What do you use Twitter for?” They don’t understand why I’m interested in “tweets” from others and what they are doing. Then they proceed to tell me how they don’t have time to tweet every move they make or to monitor another social media network. Usually I just smile and shrug, fake apologizing that “Yeah, you’re right, I’m a nerd with lots of...