LinkedIn has now launched InMaps, an experimental project that creates a stunning visualization of the connections within your business network. So how does it work? Check out their website at: http://inmaps.linkedinlabs.com
Here is an excerpt from the www.Mashable.com blog:
"InMaps sifts through all of your connections, detects the relationships between them, and groups them into different network clusters. For example, LinkedIn separated my networks into eight clusers, including my technology/social media contacts, my Mashable network and my network of classmates at Northwestern University. It color-codes and clumps these networks together so you can see the depth of your connections in one interface."