Wowhead is a popular World of Warcraft information database featuring a fast and easy to use interface. The site catalogues items, quests, talents, and much more, all able to be searched, sorted, and arranged to find the information you need.
Wowhead's improvements offer some distinct advantages over other websites with similiar content, it just needs a little more comments on certain pages. Give it a try and see what you think!
You may visit the site here.