A global content directory (42) includes a directory structure (44) that includes a plurality of product classes organized in a hierarchy. Each product class categorizes a plurality of products and defines one or more attributes of the products categorized in the product class. The directory (42) also...http://www.google.de/patents/US7590558?utm_source=gb-gplus-sharePatent US7590558 - System and method for facilitating electronic commerce transactions
