Gamification involves applying game design elements to non-game activities to motivate and engage people. It makes things more fun, rewarding, exciting, and challenging. Gamification can be used to motivate customers, potential customers, and employees. Examples include LinkedIn motivating users to complete profiles and Mint gamifying personal finance management. Nike gamified running through its Nike+ system, which tracks runs and allows users to compete. This motivated people to run more and replace shoes more often, increasing Nike's shoe sales.