The study examines the relationship between virtual brand community member’s characteristics and brand community commitment, and the moderating role of hosting type of virtual brand community. Data were collected from an online survey to members of virtual brand communities, including Apple users’ community, Window Xbox players forum, Sony PSP players group, BMW motor club, fans community of Yulon basketball team, Yankees’ fans club, LOMO Taiwan Group, Nissan Taiwan club and L.A Lakers Fans’ club. Total 212 members provided the effective data. The results reveal that brand community commitment is influenced positively by the member’s characteristics, such as selfenhancement, selftranscendence and selfexpression. Moreover, the hosting type moderated the relationship between the member’s characteristics and brand community commitment. The author discusses the implications for theory and managerial practices and suggests directions for the future study as well.