Viral marketing uses social network effect in a kind of mouth that spreads between the contacts. To take an example looking for “make children” in google. If the user finds three valid alternatives are more likely to click the button that has google +1, especially if you are recommended by a user or contact your network.

For some time social networks (Facebook, Twitter, etc.) have been the most used tools for developing viral marketing campaigns then, by its own structure in the form of networking, presents an ideal context in which messages propagate through referrals from the users themselves.

In this process are those who propagate Internet content and advertising messages through their recommendations between their networks and that is where the greatest potential of viral marketing, interest will be higher than in the case of communications “official “by companies.

A long time ago, American companies seeking a productive method to cut costs began to use the so-called “Crowd Sourcing”, ie, outsource tasks traditionally carried out an employee or contractor for this. Open source or open source Linux is a clear example, three million of free programs to make applications and best of all, it brings together the most suitable, complex problems are solved at the time and bring fresh ideas and relevant.

The pioneer of this idea as mass extrapolated to social and internet viral marketing was the facebook and we can get an idea of ​​their success. Google does not want to miss this opportunity getting the +1 button that over time we’ll see far as it goes and where it evolves to reach its goal of creating a social network really influential, now have only had frustrated attempts.