Viral marketing - as Wired sees it

Vira marketing is what Google, youTube and a lot of web companies have obtained. It's characterized by that every new user brings more than 1 user with him. If you reach 2, then the stars are the limit!
Adam Peneberg discuss viral marketing in details. You owe yourself an understanding of this pattern which drives our web!
in reference to: Pass it on: the power of viral loops (view on Google Sidewiki)