This essay try to introduce Viral Marketing in the form of case, and through analyzing its success or failure, pros or cons, I'll make my effort to find the foothold and risk point in practice. We can see that, to be a kind of network marketing which spread by customers themselves, Viral Marketing has weak controllability and predictability. So when countless enterprises which be attracted by low-cost or high-efficacy want to joy in the field, they stop for its unpredictable risk. The source, the communicatio…
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