If you have never heard of Seth Godin, I invite you to select the link below for some interesting post about the post-industrial revolution, the way ideas spread, marketing, quitting, leadership and most of all, changing everything!
Source: http://sethgodin.typepad.com/seths_blog/2010/10/ideas-spread-when.html
I spread your idea because...
Ideas spread when people choose to spread them. Here are some reasons why: