Viral marketing is a very smart and amazing type of marketing. Called by many different names like viral advertising, or buzzwords, it is a special type of marketing in which the marketer uses the pre-existing social networks which are available on the internet, so that they can increase the brand awareness of a product or service among the people. Viral Marketing can also be used for increasing the product sales through self replicating viral processes on the networks, just like how a virus spreads in the computer.