My friends and I were having a wiki-war (It's best not to ask. We're to edumacated for our own good) and I stumbled across this.
Not only does it have links back to LOTS of other warhammer stuff (included background information on, of all things, squats!), it's got plenty of old fluff stuff for the orks. We're talking second edition and WAAAGH! da Orkz here, ladz.
Go on. Take a look. You'll love it.