System for Managing and Communicating Item Information

A computer-readable medium comprising a software application for a client device adapted to communicate with a remote server system, the software application configured, when executed on the client device, to perform the steps of:

• providing access to a plurality of data objects, each data object comprising information relating to a product or service offering;
• receiving a modification relating to a selected first one of the plurality of data objects;
• and, in response to the received modification:
• creating a second data object based on the selected first data object and the received modification;
• associating derivation information with at least one of the first and second data objects indicating that the second data object was derived from the first data object;
• and
• transmitting the second data object with the derivation information to the remote server system.

A system for tracking exchange of information relating to product or service offerings between system users, comprising:

• a database module configured to store a plurality of data objects, each data object comprising information relating to a product or service offering;
• wherein the data objects are associated with corresponding data objects stored at client devices;
• wherein the database module is configured, for a selected data object in the database, to store one or more descendant data objects of the selected data object in the database, the descendant data objects created based on the selected data object at one or more user devices, and to store information specifying derivation relationships, the derivation relationships specifying that the descendant data objects were derived from the selected data object;
• and wherein the system further comprises an analysis module adapted to analyse data objects and derivation relationships in the database.