In the area of large-scale e-participation projects on a cross-national level, the project we present is based on the idea that the active involvement of young people in the process of socio-political decision-making plays an important societal role. OurSpace is a multi-national project supporting a closer relationship between European decision makers, and Europe’s younger generation. OurSpace tried to combine ICT usage, young peoples’ readiness and motivation to participate, and their assumed lack of information regarding European politics. We present the evaluation framework and methodology applied for OurSpace, the major results of the project evaluation, and the lessons learned from a comparative perspective.