Viral marketing is a phenomenon that facilitates and encourages people to pass along information about a certain topic in voluntary manner. With the relative low costs and easy access of viral marketing, this technique has gained popularity within the growing plethora of social networking platforms. Viral marketing can also be used for promotional purposes, e.g. new products, new websites and new films.

Click below for some real-life uses of viral marketing, exemplifying the importance of it in our world.

Viral Marketing and Facebook
http://abcnews.go.com/Technology/story?id=3406174&page=1

Viral Marketing and the US Presidential Election
http://prweb.com/releases/2008/1/prweb619551.htm

Viral Marketing and Film Promotion
http://www.bloody-disgusting.com/news/11658