This paper discusses the implications of the new evolving Service-Dominant (S-D) logic in marketing on brand value creation. Furthermore, it introduces the concept of online brand value and examines whether online discussion sites constitute a means for firms to co-create, together with a firm's customers, online brand value. Moreover, a conceptual framework of online discussion sites is proposed. Finally, the results of an exploratory empirical analysis of two discussion sites are presented. The findings provide initial support for the hypothesis that online discussion sites can be used to create online brand value. Moreover, the findings suggest that firm-generated discussion sites are better suited for online brand value co-creation activities than third-party generated discussion sites.