Since yesterday, I've been going to supermarkets in the Morningside/Harlem area to find Halotop Pumpkin Pie flavor. Unfortunately, none of the supermarkets had it. Today, I visited Halotop's website and found out that there was a locator page. It has a beautiful interface where I could select the desired flavor, and it will tell me the closest store that has it. I thought it was a wonderful application of interactive user interface that allowed to narrow down the database.
UNFORTUNATELY, the data must not be accurate/updated because when I walked to 131st Street Foodtown on Frederick Douglass Boulevard, they did NOT have the pumpkin pie Halotop. No matter how awesome the data-application is, if the ingredient (data) is not fresh it is of no use!