Sociologica, 3/2013 - Copyright © 2013 by Società editrice il Mulino, Bologna. 1 Essays Studying the Nexus between Collective Action Dynamics and the Web 2.0 A Continuous Learning Experience. A Reply to Comments by Elena Pavan doi: 10.2383/75771 I would like to begin this response by thanking Bernie Hogan, Nicholas W. Jankowski, Brian D. Loader and Eugenia Siapera for their useful and insightful com- ments. A person could count on his/her fingers the number of times it is possible to ponder over her work confronting with such a panel of experts. Occasions like this one are to be welcomed as valuable learning experiences during which new knowl- edge can be acquired, our arguments can be better specified and we can critically reflect on the limits of our research. Together, these four comments outline the contours of a much-needed research agenda to face the challenges that derive from three inherent features of socio-tech- nical processes: their diversity, generated by the simultaneous involvement of social and technical agencies; their dynamics, stemming from the continuous evolution and change of both social actors and technologies; and their complexity, as relations estab- lished amongst and between social actors and technologies are countless and deploy recursively across the boundary between the online and offline spaces. In a context in which methodologies are still very fluid and a plurality of research efforts are carried on independently one from another, guidelines to build a common competence and shared research practices are urgently needed. Let me then try to summarize these guidelines, so that they can become a collective resource for a more rigorous and fine-grained research of contemporary socio-technical practices. First, in order to account for the inherent dynamic feature of collective partic- ipation processes, which is now exaggerated by the mediation of information and