Commons knowledge and the definition of risks in policy-making processes

In this paper, we want to know how knowledge, available and shared in social media networks (like Twitter, Facebook, Hyves, blogs, wickis etc,) does influence processes of risk definition in policy-making processes regarding ‘wicked problems’ and how this can be explained? Little is known about how policy relevant knowledge in social media based networks is created and shared and how it influences the shaping of public policy processes.