"Its a small world!!!" : Six degrees of seperation
How often we use this phrase and I was surprised to find a theory which has actually backs this. From wikipedia.. Six degrees of separation (also referred to as the "Human Web") refers to the idea that, if a person is one step away from each person they know and two steps away from each person who is known by one of the people they know, then everyone is at most six steps away from any other person on Earth. --John Guare Well this has been the foundation for successful ventures of social networking sites.