Viral Marketing, What? Viral Videos, Why!

Why companies should be interested in Viral marketing ?
What exactly is Viral marketing ? & Viral Advertising ?
What's Viral videos ? And how do a video become Viral ?
What is Viral Ads campaign ? is there also Viral images ?
How much does it cost ? does is fit small & medium budgets ?

We will be happy to answer all your questions,

Meanwhile check this video we made, to have a simple idea
Showing difference between viral videos & TV commercials (or even video ads):
© ToViral