Citizen journalists can participate in political user-generated news websites in di erent ways, including providing content, discussing with other users, and rating the content posted on the site.Also, users of these types of sites form impressions of other users based on the information provided by different sources.e information supplied by rating systems, for example, constitutes a source of information that cues certain characteristics about others.However, user-generated news websites' rating systems usually evaluate users' participation without distinguishing between types of participation.Taking into account the origin of the information carried by the cues and the communal dimension evaluated in the process of impression formation, this study examines how a set of di erent rating system design options might in uence users' impressions of the credibility of discussants, discussion informativeness, and willingness to contribute to discussions on political user-generated news websites.e results of this study partial-