Seth Godin: The Exponential Power Of Viral
The green curve begins with just 100 people, but the idea is more viral and nets a 1.5 net passalong. It doesn't take long before overtakes yellow. The purple curve represents a an idea that is only slightly more viral generating 1.7 passalong and look at the exponential growth. More on Seth's blog.
Seth Godin's new book Linchpin: Are You Indispensable? is being released today. I was lucky enough to read an advance copy and it is truly a must read for anyone who has ever thought about becoming indispensable to their organization.