Why is the community different to existing organizations? Presently there are many different charities, foundations and companies dedicated to helping and providing a range of services to humanity at large. The differences between their system and the community are the physical, living, social arrangement, the broad long term focus and the focus on self improvement to be prepared to help others.
While many organisations like ones you know; Wikipedia, Greenpeace, Ubuntu, CERN, RDF and others focus on different aspects of helping or improving the understanding of the world we live in. The community can be considered a living breathing physical community with actual inter-human communication and collaboration. But more than this we can see it as a multi-tool of technically advanced people who help all the institutions that already exist with their expertise, research and publications.