Vaguely on-topic: Arthritis and dietary supplements (?)

I've lamented before about my arthritis picking up as my weight went down. Does anyone have personal experience with MSM and glucosamine, or even better, a link to an objective study concerning the two as treatments for osteoarthritis? Being the natural skeptic, I want to find out if they really work or are more quackery from the vitamin Nazis...

Some crap from the MayoClinic... http://www.mayoclinic.com/health/msm/AN00560  Yeah, there are some "Natural-Healing" Folks out there that'll say anything because it "feels right." Best Wishes- Dx