Online web platform aimed at sharing knowledge. It's a Google that offers concrete solutions for various problems. Solve problems once.
Knowledge management company, aimed gathering and sharing relevant knowledge for people, companies facing problems. Sharing knowledge is done through an online web platform where you can google your problem and get a concrete solution in return. It's like facebook in the sense that people can contribute to the solutions in order to further improve the knowledge. And, like amazon authors can make money by selling their knowledge/expertise.