The document summarizes research analyzing how social networks like Twitter are used by social movements. It studied the top 20 most visible Twitter users in Colombia, Venezuela, and Iran to analyze how participation and social relations are constructed. It looked at traits of users and messages, influence on followers, and how participation is exercised. The research found differences between countries in topics discussed and agenda setting, with Venezuelan and Colombian users more aligned with traditional media and Iranian users more creative. It concluded that users orient to cultural leadership profiles and act as opinion leaders not directly tied to political power.