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2. Blackshaw, P., & Nazzaro, M. (2004). Consumer-Generated Media (CGM) 101: Word-of-mouth in the age of the Web-fortified consumer. Retrieved July 25, 2008, from http://www.nielsenbuzzmetrics.com/whitepapers
3. Contemporary marketing;Boone,2007
4. Coca Cola. (2008). My Coke rewards. Retrieved July 7, 2008, from www.mycokerewards.com
5. Why pass on viral messages? Because they connect emotionally;Dobele;Business Horizons,2007