Social networking sites provide consumers with the opportunity to easily and rapidly obtain information about brands, products, and services. Considering the effect that online word-of-mouth can have on important marketing outcomes, such as product sales and brand loyalty, it is important to understand the factors that drive consumers to seek product-related information on social networking sites. The present research focuses on whether and how cultural collectivism influences the extent that consumers seek product-related information through discussion with others on social networking sites. Study 1 uses archival data which includes the collectivism score for 53 different countries and the extent that consumers in those countries seek product-related information on social networking sites. The results suggest that collectivism exerts a positive effect on the extent that consumers seek product-related information on social networking sites. The results of a second study using primary data suggest that the positive effect of collectivism on information seeking is mediated by trust in the members of social networking sites.