CNN.com - Italy sets strict pizza guidelines - May 27, 2004

I'm all for this.. Granted they left off most toppings I would add but some things must have the original defined and protected before what they inspired replaces them.
CNN.com - Italy sets strict pizza guidelines - May 27, 2004: "They recognize only three types of real Neapolitan pizza: mariner, with garlic and oregano; Margherita, with basil and mozzarella cheese from the southern Apennines; and extra-Margherita, with fresh tomatoes, basil and buffalo mozzarella from Campania, the region that includes pizza's hometown, Naples."