This study examines how gender affects online gossip on social networking sites. Based on gender theories and agency-communion theory, it is posited that achievement value, friendship value, and normative pressure differ according to gender (female vs. male), the level of propensity to gossip (high vs. low), and the interaction between the two. An experimental survey is conducted with 809 general consumers. Between-subjects multivariate analysis of covariance reveals that gender has an impact only on friendship value, whereas propensity to gossip affects achievement value and normative pressure. No interaction effects are observed. However, a subsequent analysis of covariance finds an interaction between gender and propensity to gossip through electronic word-of-mouth for a high-involvement product. In closing, theoretical and managerial implications are discussed while important limitations are recognized.