Definition of Viral Marketing

"Viral Marketing "describes any strategy that encourages individuals to pass on a marketing message to others, creating the potential for exponential growth in the message's exposure and influence. Like viruses, such strategies take advantage of rapid multiplication to explode the message to thousands, to millions." quoted by Dr. Ralph F. Wilson originally published on Web Marketing Today.

Based on the above definition, we understand that the term "viral marketing" is offensive. The marketing message will be disseminated to everyone with a low cost through using internet. When off the internet, it's also defined as "word-of-mouth" marketing. It seems like to produce the sounds or create some gimmicks through online PR or online advertising and e-mail marketing to make widely known.