Now you start to browse around looking at the profiles of other members. If you stumble across a member who you do not know but is a "friend of a friend" or a "friend of a friend of a friend" then the system displays a little network diagram that shows the linkages between you and that member - complete with little thumb-nail photos of all the people in the network.
Its packed full of other useful ways of connecting you to other interesting people but this little tool just stands out.
It is so so cool! Also take a look at www.ecademy.com - another interesting networking site.