What company/industry would you like to see open their data?
RiderOfGiraffes: Food.  I want to know what's in every packet, and what else is made in the factory.  If you're gluten intolerant, it matters that flour is used on another process line in the factory that makes the chocolates that themselves have no wheat, oats, barley or rye.If I had access to the complete ingredients list for every food item, I could buy treats for my best friend's son without wondering whether it will send him into anaphylactic shock.Never mind business opportunities - this data could save lives and prevent misery on a daily basis.