Research on cooperative social structures and particular types of conflict behavior online is readily available. However, the field lacks a framework to analyze how antagonistic structures are represented on online platforms. Social structures can be represented formally (manifestly) or informally (in open verbal or visual forms) or remain latent-a distinction that has received little scholarly attention in the analysis of computer-mediated communication. Based on an interpretative analysis of relational structures and types of acts, we distinguish structural elements that lead us to empirical typologies of antagonistic structures and an analysis of whether and how they are represented online. We develop theses about why some structures are formally represented more often than others and theorize the consequences of this selective representation.