What is Viral Marketing?

Viral marketing, viral advertising, or marketing buzz are buzzwords referring to marketing techniques that use pre-existing social networks to produce increases in brand awareness or to achieve other marketing objectives (such as product sales) through self-replicating viral processes, analogous to the spread of viruses or computer viruses. It can be delivered by word of mouth or enhanced by the network effects of the Internet.[1] Viral marketing may take the form of video clips, interactive Flash games, advergames, ebooks, brandable software, images, or text messages.