Problem: Often when going to a grocery store, we get a receipt and almost immediately throw it away. And if we do keep it, it's incredibly difficult to track a specific receipt/line item.
Solution: It'd be great if there was a service that managed our receipts as soon as we made a purchase. For example, when I go to home depot, I would get the option to print a receipt, email my receipt, or upload the receipt to this new service. When I get home, I can then look up any item I've ever purchased or to find a receipt by date/store/city/etc.
Monetization: Charge a monthly subscription or a one-time fee for the service. You can also use the data from the receipts to target ads (since you know where everyone is shopping and what they are buying).
Contributed by: Oliver Collins