Delivery.com now has an app for Windows Phone 8. It lets you order delivery from participating local restaurants and stores in the United States. There are over 10,000 local businesses listed with delivery.com, so you can get things delivered instead of going outside.
If you are not a member, account setup is required. After providing your name and address, delivery.com will show you the restaurants and stores that deliver to that location. Choose a merchant, browse the menu, and place your order.