fereed Journal Articles Zhang, M., Jansen, B.J., and Chowdhury, A. (2011) Influence of Business Engagement in Online Word-of-mouth Communication on Twitter A Path Analysis. Electronic Markets: The International Journal on Networked Business. 21(3), 161-175. Jansen, B.J., Sobel, K., and Zhang, M. (2011) The Brand Effec