ERoSC is an exploratory research project that aims at studying the socio-economic impact of emerging social computing applications. The exploratory research scheme of the European Commission Joint Research Centre’s Institute for Prospective Studies (IPTS) is an internal instrument aimed at building up competence in strategically relevant scientific fields. The ERoSC project has been awarded as the IPTS 2007 Exploratory Research project. Its purpose is to identify and discuss current and future socio-economic implications of social computing and to identify policy options for Europe.