"A professional network service (or, in an Internet context, simply professional network) is a type of social network service that is focused solely on interactions and relationships of a business nature rather than including personal, nonbusiness interactions."
- Jessica E. Vascellaro (2007-08-28). "Social Networking Goes Professional". The Wall Street Journal (source: Wikipedia)
Professional networking evolved because the basic personal social networking created identity crisis. What we are to our friends is quite different to what we are to everyone else! And this is what makes the frien