PurposeThe purpose of this article is to critically analyze the existing literature on internal social media (ISM) within the context of internal communication, aiming to provide a more nuanced understanding of the roles of ISM and its potential implications for communicative practices.Design/methodology/approachDrawing on a problematizing review methodology, the article conducts a critical analysis of a selected body of literature with the aim of problematizing assumptions that form the foundation of existing theories and constructs in the literature on ISM communication.FindingsThe article points out two interrelated critical issues that might constrain our understanding, scholarly conversation and theoretical development of the roles of ISM communication in organizations: (1) Philosophical inexplicitness; (2) Ontological inconsistency.Originality/valueAssuming a communication perspective, the article contributes suggestions for future research on ISM in the context of internal communication, calling for research to: (1) explicitly consider the epistemological implications of philosophical positions, including the view of technology; and (2) foreground meaning creation processes as the analytical point of interest.