The conflict between an aggregate rating and a customer’s comment oftentimes cause consumers’ negative feelings on the quality of a product. The purpose of this study was to investigate whether such conflict influenced an individual’s purchase intentions. Particularly, this study looked at how social influence mediated the effects of a conflicting aggregate rating and a customer’s comment on purchase intention. To achieve the goal, an online mixed factorial experiment was conducted with one hundred and eighty-four student volunteers. The independent variables of interest were: consistency of aggregate rating and customer comment and number of Facebook likes. The dependent variable was purchase intention. In this study, participants were mainly recruited through the social groups on Facebook. Participants were instructed to provide their degrees of purchase intentions to snack food on our experimental website (containing pages reflecting differing treatment conditions under the independent variables). Results of the experiment showed that the conflict between a aggregate rating and a customer’s comment, as well as the number of Facebook likes respectively had significant impacts on purchase intentions. Results of this study have implications on the design of social interfaces on social commerce websites.