"This report presents an analysis of Iranian public opinion and mood as expressed over Twitter in the nine months following the election. The research represents an initial case study of a novel methodology developed to analyze politically oriented social media content. In addition to policy-relevant findings regarding Iranians’ attitudes toward a variety of topics (e.g., President Mahmoud Ahmadinejad, Supreme Leader Ali Khamenei, the United States), our methodological approach is described in detail. The results should be of interest to analysts and policymakers concerned with Iranian politics and public opinion in closed societies, as well as social media researchers." (Preface)