SonarQube Community is a platform where SonarQube users (http://www.sonarqube.org/) could share his knowledge or ask for support to the community.
In fact, currently, there is no website where SonarSube users can discuss about this tool. This website, forum, has been developed in order to gather and facilitate exchanges around SonarQube.
So, don't hesitate to share to gather Sonarqube community on this website. ;)