Data Portability across Social Networks

Today, social networks are for much more than just having fun with friends. Millions of dollars are being spent to extract valuable information out of social networks for marketing purposes. Attaching machine readable semantics to social networks, that is absent at present, will lead to a better degree of information extraction. To achieve this goal, user input is required. From users' point of view, providing the same data to different social networks creates a drawback. This is due to the centralized one-of-a-kind nature of social networks. ...