An assessment of the optimism surrounding the opportunities that social media offer for humanitarian action, drawing on analysis of the phenomenally popular and controversial Kony 2012 campaign. In early March 2012 the Kony 2012 viral video took the world by storm. Attracting over 70 million views in less than a week from its release it was equally criticized and admired as an example of the power of social media. In this talk Madianou assesses the optimism surrounding the opportunities that social media offer for humanitarian action. Drawing on the analysis of the phenomenally popular and controversial Kony 2012 campaign she observes that the architectures of social networking sites orientate action at a communitarian level which heightens their post-humanitarian style (Chouliaraki, 2012). However, an emerging new genre of reporting and commenting, which she has termed 'polymedia events' can potentially extend beyond the limitations of SNS communication by opening up the space for reflexivity and dialogical imagination.