Here is an example of a recent viral video:
It has had millions of plays on YouTube and will likely spread for months. Thousands of other entertainment sites will pick it up as well and people will tell their friends and it well spread with a life of its own. Nightly news even devotes broadcasting time to covering viral videos of the moment. Viral media has become that popular.
A viral photo called The Cat Tree:

This viral media is available for you to use and best of all, monetize. I go into great detail in the e-book about where to find "public domain" viral media, how to present and promote it and most importantly, make money from it.