Brett_Tabke - 12:02 pm on May 19, 2011 (gmt 0)
LinkedIn is one of the true social media success stories. It is effectively cornering the market as a long term employment service. Where the other big ones like Monster and CareerBuilder are "1 time" usage outlets, LinkedIn gives people a reason to stick around inbetween hires and continue to 'do business'. If you have been in business very long at all, you quickly learn that business is a contacts game. Getting fresh contacts is difficult and the only ones that "stick" are those that you are referred too by friends. LinkedIn has become one of our greatest resources for contacts and new business connections.
Here is a great chart of revenue sources at LinkedIn: