Online Shopping APIs

I had been brainstorming ideas for some cool shopping web applications and realized that the online shopping world is missing a key component to make this easy: APIs!

Just think how awesome it would be if Macy's, Nordstrom, Bloomingdale's, Anthropologie all opened up their site data in a machine readable format. You could create some really useful applications, such as price comparisons across all stores, notifications of price changes, and complex searches.

I'm guessing this will never happen, but one can hope..