Viral marketing, also known as word-of-mouth advertising, convergence marketing, buzz marketing, network marketing, or referral advertising, is the skillful promotion of a product, brand or services with strongest influence in the online market. A fertile source for viral marketing is through blogs, online forums, IRC (Internet Relay Chat), instant messaging, UseNet newsgroups, and emails. Main purpose of this marketing strategy is utilizing several pre-existing social networks to generate positive impacts on the minds of maximum number of readers.