LinkedIn is a business networking utility that connects people with friends, co-worker, and past co-workers.  Additionally, many people use LinkedIn to keep their industry network updated and active. 

CLAPCA will use LinkedIn to assist in networking, promoting discussion forums, and communicating news, meetings and other events.

One thing you do need to know, you must sign up for your own LinkedIn profile to access CLAPCA's LinkedIn Group.  However, it is FREE and as you start asking around you'll be amazed how many of your associates, vendors and customers are already LinkedIn.