Patent ID: 8151198

Claim:
A server providing an item exchange for a virtual world lacking a common currency for item valuation, the server comprising: a processor configured to: receive a request from a client to initiate the item exchange, the client having an inventory including a first quantity of tradable items, wherein the first quantity of tradable items has a first exchange value defined by a second quantity of second items and has a second exchange value defined by a third quantity of third items; present a user interface on a display of the client for the item exchange; receive a selection of either the second quantity of second items or the third quantity of third items for the item exchange from the client; remove from the inventory of the client the first quantity of tradable items defined by the first exchange value or the second exchange value, based on the selection; and add the second quantity of second items or the third quantity of the third items to the inventory of the client, based on the selection.