The excerpt and link below is from the always intersesting blog of Seth Godin. The article discusses the graph shown here and how a good idea can grow very rapidly.
Of course we have always had good ideas and people would pass them on when they could. The difference now is that with a completely connected world, through the Internet and social media, what used to take months or even years to catch on or become well known can now take just days.
But wait! If your idea is just a little more viral, a 1.7 passalong, wow, huge results. Infinity, here we come. Thats the purple of course.A slightly better idea defeats a much bigger but disconnected user base every time.
via Seths Blog.