As open source software (OSS) is increasingly used as a key input by firms, understanding its impact on productivity becomes critical. This study measures the firm-level productivity impact of non-pecuniary (free) OSS and finds a positive and significant value-added return for firms that have an...

Studies of online word of mouth have frequently posited---but never systematically conceptualized and explored---that the level of disagreement among existing product reviews can impact the volume and valence of future reviews. We develop a theoretical framework of disagreement in online WOM...