Citizen Science, a fairly new term but a practice with more than a century, includes today a wide range of activities through which citizens may play a central role in scientific projects, either by collecting data, analyzing massive data sets, providing resources, or by developing small-scale experimental activities among grass-roots groups. In parallel, the realm of Digital Society is upon us, triggering a social and information revolution. Today, large computing infrastructures and high performance communication technologies allow the tackling of up till now intractable scientific problems, in a new field known as e-science supported by e-infrastructures. Similarly, the millions of people around the world that are permanently interconnected through their computers and mobile devices, may be considered as a citizen-based infrastructure (c-infrastructure) to perform c-science through distributed computing, collective talent exploitation, and ubiquitous data gathering.Funded by the European Commission, SOCIENTIZE is a Seventh FrameworkProgrammeproject thataims to set the basis of citizen science in Europe for Horizon2020. For the last two years, SOCIENTIZE has been promoting Citizen Science to:(1) raise awareness about the importance and impact of citizen science, (2) foster interaction and coordination between all citizen-science actors, (3) promote the capabilities of c-infrastructures among researchers and citizens for an enhanced science, (4) coordinate and promote citizen science projects,and (5) collect and share best practices and recommendations for the implementation of citizen science projects in Europe. To achieve these goals, SOCIENTIZE has developed and implemented several citizen cyberscience activities thatare described herein.