Goblin Workshop was a nice World of Warcraft fan site with an extensive database of all sorts of things, similar to Allakhazam or Thottbot. Perhaps the primary distinguishing feature of Goblin Workshop is that in searching for any given item, it says whether it is junk, a quest reward, professionally crafted, etc. Under each item, it indicates specifically which quest will award that item. It also has very good information on subzones, which is of value to WoWWiki editors.