I think we should all compile a list of our favorite WoW info Sites, especially those that have interesting/unique features. This site is a good one but there are other sites that have different stuff, like talent calculators and stuff. You dont have to post if you dont want but it might be of some use to people who arent good at finding info lol.
My contribution:
http://wowvault.ign.com/?dir=locations&content=map-launcher - excellent maps and other cool stuff, most people know this one already i think
http://www.thottbot.com/ - good list of just about anything as far as quests and spells and such
And of course http://wow.allakhazam.com/