Having a successful viral marketing campaign is the dream of any marketer or business person. It is also called word of mouth advertising. This is when a product is so good that people tell their friends about it. These friends tell their other friends and so on. It is cheap and very effective. The only problem with it is that it is not easy to do.
The reason that it is called “viral” is because it spreads around a population like a virus (disease). Google and Facebook successfully used viral marketing strategies. They did not have to spend a lot of money on advertising because everyone told their friends and family about this new awesome product. Obviously, most viral marketing campaigns fail.