I've had several people ask me about the purpose of using LinkedIn. There are so many reasons to use LinkedIn. Here is just a bit of insight into who and how...
Who should use it?
As I see it: job seekers (both active and passive), recruiters, and anyone looking to network.
This covers nearly all business professionals. Aren't we all looking for that next big opportunity?
How do you use it?
First, sign up and complete your profile with accurate information
The more complete your profile the easier it will be for others to find you, plus when you initiate a conversation with someone, the first thing they will do is check your profile.