The emergence of networked social movements in 2011 has opened a new door in the social movements’ literature. By adopting a technopolitical and situated approach, in this paper, we explore the case of the 15M movement three years after its formation in May 2011. Through an online survey and a nonprobabilistic sampling procedure, we pay special attention to the perceptions and opinions of the movement’s participants. We distinguish seven thematic sections: the relationship with the movement, previous political participation and motivations, the use of information and communication technologies (ICTs), the emotions experienced, the evolution of the movement, its influence on elections, and the impacts on several aspects of social life. The results show that the respondents (N=1320) are to a large extent adherent to the movement and largely prompted into action due to political issues. Also, they mostly believe that the movement remains alive yet in new forms, and perceived impacts on different areas, institutions, behaviours, and ideas. We conclude by describing 15M as a case that adequately fits the concept of a networked social movement. Finally, we suggest future steps in the understanding of these movements by further applying the online survey designed for this study and complementing analyses via other research methods.