Startup Idea : virtual shopping mall

Think of a shopping mall, And in the shopping mall the are loads of stores to shop in. Well this would make this b in your own home I am proposing a website that when you log on or make an account you can make an avatar of your self and walk round and shop.But the mall would be open to any business because in shopping malls small type stores cant afford the rent of a unit and it would give small busineses the chance of selling from their store but also on line with out the fees of setting up there own website. Profit could be made by a small fee for (rent of a store/unit) or advertising.