LinkedIn useful groups for IP Security Professionals

Just a quick note, if you use LinkedIn or if you have never used it there are some useful groups you might like to join. BTW LinkedIn is a great way to network with other professionals who have similar interests and even share links with many others in the business community, a good way to drive your business contacts. Anyway i digress, the groups you might like to join are "Milestone Certified Professionals" aimed at as the title suggests or "Cameralinks" aimed at general camera information or questions around the IPSCS (IPCCTV - i hate saying this) systems. Best of all its free.