Amazon has added a travel store, appearing as a new tab on Amazon’s home page. It links services from Expedia and Hotwire (a discount agency), presented in an Amazon design and with Amazon handling the transactions. Amazon has cut several of these deals where it provides the storefront (and customer base), and another retailer handles inventory and order fulfillment. Last year Amazon took over the online presence of Toys R Us, and it cut deals earlier this year with Target and Circuit City. Here’s an article with more details.