1 Billion and counting… someone should make a multi-lingual website that has a webstore dedicated just to the Muslim community. To start out with prayer essentials and Islamic books can be marketed. Drop shipment can be used where necessary. Ship worldwide.
You can even reason with some high-traffic websites (muslim websites ofcourse) to offer you discounted rates for advertising, or do a barter arrangement with them. All you need to get started is a shopping cart, and a merchant account (try 2Checkout.com). This is one website that will make money.
Good luck to anyone who implements it.