One example is the rise of the FOAM movement. FOAM stands for Free Open Access Meducation - a coin termed by Mike Cadogan a doctor you have all recently seen on the television treating injured australian rugby players. The hashtag delineates material that is openly accessible to all. It is generally used by the critical care and emergency medicine communities but is expanding rapidly. There is no quality control - the beauty is in the network itself identifying the most relevant, innovative, useful material and sharing, modifying and challenging it.