Arthritis Foundation: Good consumer site with information on rheumatoid arthritis and other health issues that affect the joints and bones. Some information in Spanish.

National Institute of Arthritis and Musculoskeletal and Skin Diseases: Extensive resources, also in Spanish, but generally poorly organized.

John Hopkins Arthritis Center: Thorough information site that also allows you to ask and expert.

Mayo Clinic: Has extensive consumer friendly information.

Hospital for Special Surgery: This hospital provides extensive consumer information across many diseases including arthritis.

Cleveland Clinic: Good information for consumers, also in Spanish. Nice bonus, you can have a live chat with a health educator.