Many companies don’t understand the difference between viral marketing and viral growth. Viral marketing is essentially “word of mouth” or “person-to-person distribution” and is the latest buzzword. Viral growth implies a K-factor greater than 1 (i.e. for each new person who tries a product/service, they will each invite more than 1 registered user of the product on average).
http://www.startuplifeblog.com/tag/k-factor/
http://www.startuplifeblog.com/tag/k-factor/
