I'm glad to see a medXcentral group on LinkedIn. Let me tell you a couple of things that LinkedIn has done for me -
It helped me find a friend, a great team and work with a group in Mexico - that has continued to be one of the best things to ever happen to me.
Belonging to groups on LinkedIn has brought our business and blog more "eyeballs" than anyother source - that includes "organic search," buying keywords on Google, and email blasts. We need to drive this group - it will pay off big time. If you belong to LinkedIn - Join! If you don't - Join! As your friends and associates and total strangers (ala Twitter) to Join!