Low Back and Spine Pain http://www.spine-health.com/ A site with lots of information on herniated discs, spinal stenosis, spine anatomy and more. It also has video animations of the various pain procedures.
http://www.orthospine.com/ Use this site's search function for lots of information on most spine pain problems and treatments.
http://www.drdillin.com/ This is another site with video animations as well as lots of information about spinal conditions,treatments, anatomy, etc. It is well worth touring.
Arthritis http://www.arthritis.org This site covers arthritis in general, not just arthritis of the spine, but it includes much useful information on living, and coping, with arthritis.
Fibromyalgia http://www.fmnetnews.com/ This website is dedicated to disseminating reliable information about fibromyalgia and related syndromes.
American Chronic Pain Association http://www.theacpa.org/ The goal of this organization is to facilitate peer support and education for individuals with chronic pain and their families so that these individuals may live more fully in spite of their pain.