From my experience,
LinkedIn is really just a bunch more bulletin boards like this one... and you can join any number of conversation boards related to topics or groups or companies that relate to your interests and business...
I'm not a social media guy myself... I joined Facebook under protest... lol... a business acquaintance talked me into it... don't really get it...
LinkedIn though is different... I belong to several different groups relating to contracting, sales and marketing and business...
I find that it is good to get different points of view and to get information from outside the box so to speak...
Just my two cents... hopefully its worth that much... lol
