Here are some useful links from around the web for Karate:
Wikipedia Page: http://en.wikipedia.org/wiki/Karate
Japan Karate Association (JKA): http://www.jka-england.org/
The English Karate Organisation: http://www.theeko.eu
Think there should be a link here that we haven't mentioned? Email us at firstname.lastname@example.org and we'll put it up if we like it!