We have found these links helpful for general information, reasearch and just keeping track of what's going on:

United States National Karate Federation
www.usankf.org

USA Martial Arts Federation
www.usamaf.com

World Karate Federation
www.karateworld.org/

American Samurai Magazine

www.americansamurai.com/index.php
Judo Info
http://judoinfo.com/

www.samurai-sword-site.com/Sword-Anatomy.html

www.geocities.com/alchemyst/glossry.htm

www.geocities.com/alchemyst/terms/terms.htm

Katana/Iaito
http://www.chenessinc.com/