6 Degrees from Kevin Bacon is a trivia game based on the concept of the small world phenomenon and states that any actor can be linked through his or her film roles to actor Kevin Bacon. On a larger scale, it is also believed that all of us on earth are linked to one another in 6 social connections.
In a recent study, Microsoft tracked all use of its Microsoft Messenger in the month of June 2006. It gathered 4.5 terrabytes of data on us all and amazingly found that we are all 6.6 steps (msn buddies) away from each other!
Its a pity that it only takes into account MSN and not AIM and Gtalk isnt it.