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This paper portrays the literature on voluntary corporate disclosure via social media networks over the course of two decades (2002-2022) through a content analysis framework. Focusing on papers in English, Turkish and Arabic, it reviews a total of 65 studies from 15 countries, based on number of posts, type of information disclosure, time span and social media platforms used. Additionally, it provides a detailed break-down of the reported effect between voluntary disclosures on social media and a total of 37 different variables used to proxy for market, accounting, corporate governance and firm-specific (size, age and risk) measures. Drawing from an exhaustive analysis encompassing more than 51 thousand companies and nearly 70 million social media posts, the prevailing body of knowledge pertaining to corporate disclosures via social media predominantly hinges upon empirical evidence based on the United States and the United Kingdom. We feel that more country comparison studies and multi-lingual samples as well as meta-analyses could significantly improve our understanding of this field.