This document describes the efforts of the StratusLab project to better understand its target communities, to gauge their experience with cloud technologies, to validate the defined use cases, and to extract relevant requirements from the communities. In parallel, the exercise was used as a dissemination tool to inform people about existing software packages, to increase the awareness of StratusLab, and to expand the our contacts within our target communities. The project created, distributed, and analyzed two surveys to achieve these goals. They validate the defined use cases and provide detailed requirements. One identified, critical issue relates to system administrators’ reluctance to allow users to run their own virtual machines on the infrastructure. The project must define the criteria to trust such images and provide sufficient sand-boxing to avoid threats to other machines and services.