This document discusses methods for measuring the impact of citizen science projects online. It describes the development of a framework called MICS (Measuring Impact of Citizen Science) for assessing citizen science impact. MICS includes indicators for different domains like society, science, economy, environment and governance. The framework provides characteristics for each indicator such as its name, description, data type, and how data should be collected and analyzed. Case studies are being used to help implement and refine the MICS framework.