I'm currently not playing WoW, but I have several lvl 60 characters on Al'Akir EU Alliance. When I came across a WoW item creator on the web, I thought I could do it better and decided to make my own Item Creator. Only to find out afterwards that at least two other people had the same idea :P
I'm interested in the rules and formula's Blizzard uses to design items, hence my addition to wowwiki: Formulas:Durability. Maybe I'll incorporate some of those rules in my item creator once I know more about them, to be able to design realistic items.