And anyway, the whole "small world" theory's flawed anyway. If you consider, for a moment, that you probably know 100 people. And that each of those 100 people knows 50 people you don't know. And that each of those people knows 100 people. Follow this through to it's logical conclusion, and by the time you've reached the famous "sixth degree of separation" you've got 31.25 billion people. Given that the entire population of the earth is only six billion, there's a fairly good chance that you're intrinsically linked to every single person on the planet. A truckload of very interesting (to geeks) research has been done on this topic, and can be found here, here. The second link is loads of fun because they're conducting an experiment to prove this theory. Register, and help science.