What do MySpace, Facebook, Instagram, Snapchat, and Twitter have in common? They're all social. They help us understand the social web we sit within, and they also give us the social reinforcement and support that we crave. In the consumer product world, the "most engaging" (AKA time consuming) apps are all social. Uber, Amazon, and Google are all world-changing, but they don't command the time and attention of Facebook and Snapchat. After all, they're utilities that a person comes to, uses to solve a problem, and moves on.