Viral marketing helps the consumers in order to promote and increase visibility of the site in search engines more often. When people forward messages with links to their friends or when they encourage their friends to visit specific links or websites on the internet, or when they share videos among themselves they could be presumed to be practicing viral marketing. YouTube may be considered to be the best example of internet viral marketing. To improve the attraction of the sites of network and to enhance their effectiveness as marketing tools, videos are embedded. Viral marketing influence more people to buy than most other forms of marketing. When a message is coming from friends or family you have a relationship with the validity for the message is valued much higher. Humans are individuals and their behaviour greatly influences each other. So we are going to see their buying behaviour depending upon viral marketing.