Viral Marketing

Viral Marketing: Also called viral advertising, viral marketing refers to marketing techniques that use pre-existing social networks to produce increases in brand awareness. The awareness increases are the result of self-replicating viral processes, analogous to the spread of pathological and computer viruses. It can often be word-of-mouth delivered and enhanced online; it can also harness the network effect of the internet and can be very useful in reaching a large number of people rapidly. Source: Wikipedia