For those of you who use Facebook here is an interesting application which maps out the relationships between your friends, I find it interesting because it looks very much like the way neurons connect to each other and fits it to my theory that everything is a de multiplication of an original building block organized by a universal equation.
You can actually see in a previous post marking the relation ship between an image of out universe and an image of neurons in out brain link
If we can discover what this equation is and it has to be a simple equation than it will help us understand how epidemics spread, how crime spreads, how to best build information networks or data in general... the list goes on and on...