Somebody should team up with the Better World Shopper folks (http://www.betterworldshopper.org http://www.betterworldshopper.org) to make this happen. They do c

Somebody should team up with the Better World Shopper folks (http://www.betterworldshopper.org http://www.betterworldshopper.org) to make this happen. They do currently have an iOS app, but it's still way more manual work than it sounds like the author of this article is looking for.