16. A seller application that facilitates communication of listings to a network-based transaction facility, the seller application including: a configuration and registration module to initially configure the seller application executing on a client machine according to a default targeted site, the default targeted site being the site from which the seller application is downloaded; an interface module to facilitate selection of at least one targeted site from a plurality of targeted sites presented to a user, the plurality of targeted sites being provided and supported by a network-based transaction facility; and wherein the configuration and registration module is to configure the seller application according to the at least one targeted site selected instead of the default targeted site, wherein configuration by the configuration and registration module includes configuring the seller application to communicate with the network-based transaction facility according to conventions associated with the at least one targeted site selected.
16. A seller application that facilitates communication of listings to a network-based transaction facility, the seller application including: a configuration and registration module to initially configure the seller application executing on a client machine according to a default targeted site, the default targeted site being the site from which the seller application is downloaded; an interface module to facilitate selection of at least one targeted site from a plurality of targeted sites presented to a user, the plurality of targeted sites being provided and supported by a network-based transaction facility; and wherein the configuration and registration module is to configure the seller application according to the at least one targeted site selected instead of the default targeted site, wherein configuration by the configuration and registration module includes configuring the seller application to communicate with the network-based transaction facility according to conventions associated with the at least one targeted site selected. 27. The seller application of claim 16 wherein the configuring further includes setting up the seller application so that where relevant, operations involving currency are in a currency type configured for the at least one targeted site selected.