1. A method of customizing a seller application that facilitates communication of listings to a network-based transaction facility, the method comprising: configuring a seller application executing on a client machine according to a default targeted site, the default targeted site being the site from which a user downloaded the seller application; facilitating selection of at least one targeted site from a plurality of targeted sites presented to the user, the plurality of targeted sites being provided and supported by a network-based transaction facility; and configuring the seller application according to the at least one targeted site selected instead of the default targeted site, the configuring the seller application including configuring the seller application to communicate with the network-based transaction facility according to conventions associated with the at least one targeted site selected.