LinkedIn Maps takes your LinkedIn contacts and groups them. The result is not only interesting but rather pretty. You can mouse over the different nodes, see who they are and who else is connected to them. After a few nodes I was able to see patterns in all my groups but one …
The group I can’t identify is dispersed throughout the whole map and contains friends from college, old collegues from HP as well as people that used to work at O’Reilly. I believe the group is really one of people that don’t share enough connections with others in my network to fall into any one group.