Viral marketing is a type of marketing in which a product or brand fetches the interest of consumers and the sale of the product and brand through the message spread like virus in the market and the society or we can say the news or the message or the information spread so quickly in the market just like any virus in the human blood. This type of marketing is helpful in spreading the information and the rumors very quickly like fire in between the public and the target audience and just because of this feature this type of marketing tool is very famous on the internet and social media networking sites and platforms. Mostly this type of marketing technique is used when the new product is launched and when the new films are launched into the market on a bigger platform from where the important and interesting news and information can be leaked out to make the product or the film in news and thus helps the product to become famous in the market in between its potential consumers. Viral marketing is a type of marketing which has both the aspects negative one and the positive one. But mostly viral marketing is used by the negative aspects of making a product famous or for promoting product and service. This type of marketing is less costly and the effectiveness of this type of marketing tool is very high and it is not an invasive type in nature.