In web-based systems and social applications (including in training and human resources), badges can be very useful tools. BeKnown and BranchOut use badges to encourage people to create more friends (you receive more badges are your network grows). Reward and recognition companies award badges to people who receive a high number of accolades from their peers. Expert networks like Quora and Forum award badges for highly rated experts who actively answer lots of questions. And LinkedIn prominently displays your network, which is a form of social recognition, gaming, and badge.