Yes, I'm referring to that concept found in the 'Tipping Point' by Malcolm Gladwell. In his book, he asks the question, "Why is it that some ideas or behaviors or PRODUCTS start epidemics and others don't?". He follows up with another question, "And what can we do to deliberately start and control positive epidemics of our own?". I enjoyed the book, and I wanted to mention the 'stickiness factor', I guess because I recently saw this picture, and thought of it. This is a picture of a virus tha...