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There is debate on the origination and the popularization of the term Viral Marketing, though some of the earliest uses of the current term are attributed to Harvard Business School graduate Tim Draper and Harvard Business School faculty member Jeffrey Rayport. The term was later popularized by Jeffrey Rayport in his 1996 Fast Company article 'The Virus of Marketing' , and Tim Draper and Steve Jurvetson of the venture capital firm Draper Fisher Jurvetson in 1997 to describe Hotmail's e-mail practice of appending advertising for itself in outgoing mail from their users.[3]
Among the first to write about viral marketing on the Internet was media critic Douglas Rushkoff in his 1994 book Media Virus: Hidden Agendas in Popular Culture. The assumption is that if such an advertisement reaches a "susceptible" user, that user will become "infected" (i.e., accept the idea) and will then go on to share the idea with others "infecting them," in the viral analogy's terms. As long as each infected user shares the idea with more than one susceptible user on average (i.e., the basic reproductive rate is greater than one - the standard in epidemiology for qualifying something as an epidemic), the number of infected users will grow according to a logarithmic curve, whose initial segment appears exponential. Of course, the marketing campaign may be wildly successful even if the rate at which things are spread isn't of epidemic proportions, if this user-to-user sharing is sustained by other forms of marketing communications, such as public relations or advertising.
Among the first to write about algorithms designed to identify people with high Social Networking Potential is Bob Gerstley in Advertising Research is Changing. Gerstley uses SNP algorithms in quantitative marketing