Third, the findings also give some theoretical insights to social commerce studies. In our studies, users’ behaviors were found to be more affected by group information but not group norms in the combined environment of social media and e-commerce. Because social media tends to play a role as a many-to-many information channel enhancing information spread, the users in social media and its related e-commerce website may be easily influenced by that information. This means that researches on users’ behavior in the combined context of social media and e-commerce should pay more attention to the informational aspects that help users make the right decisions, rather than the normative aspects that have been emphasized in the prior researches with a single view of social media context.