With the budgetary recession and the transformations of the models of governance, evaluation knew an unprecedented craze and made its entrance to all professional fields, including that of the social. The problem which settles is to know how to estimate the services in a domain such as sociocultural community development, which takes root in the democratic values such as citizenship, participation, empowerment. To answer this interrogation, the authors opted for a methodology and an epistemological positioning based on two principles: the requirement to give place to the plurality of the points of view of the actors launched in a process of participative evaluation and a research-intervention based on the co-construction of a tool for collecting data which leans on the new media. They share, in this article, certain theoretical, methodological reflections, hypotheses and observations aroused in the course of this experiment.