A lot of solutions are available on the Internet to manage knowledge: Questions & Answers, Forums, Wikis, and many more. I will explain the interest of gathering this knowledge in one place, and use Bonita BPM Community as an example. This will help you to: - know what users do with your product/software - create quality content to help them - integrate their account with your SSO and CRM I will also introduce "Community Knowledge Management" and the new Drupal distribution called Group Mind.