Abstract: Method and system for performing electronic commerce over a data network via a local application of a user's wireless device and a LAD engine. Accordingly, the user registers to the system for the wireless device and downloads the local application into the wireless device. Then the user activates the local application and provides an address upon request from the local application. The local application provides the user with a menu of available items/services which are relevant to the address and the user selects entries on the menu, for reaching sub-levels of the menu that include lists specific merchants and selects a specific merchant and desired items/services provided by this specific merchant. The user submits an order of the desired items/services by the local application to the system, which stores the order in a database and relays the order from the system to the merchant by the server. The user is billed and the merchant fills an order, for supplying the desired items/services to the address.