Vol. XLVI (April 2009), 260–278 260 © 2009, American Marketing Association ISSN: 0022-2437 (print), 1547-7193 (electronic) *Jason A. Duan is an assistant professor, Department of Marketing, McCombs School of Business, University of Texas at Austin (e-mail: [email protected]). Carl F. Mela is Professor of Marketing, Fuqua School of Business, Duke University (e-mail: [email protected]). The au...