Second Life Viewer-Managed Marketplace
This viewer allows Merchants to manage inventory associated with Marketplace Listings from within the viewer. In addition to making management of Marketplace Listings easier, sale of items which Merchants do not have the right copy will now be supported with the Direct Delivery purchase mechanism.
Until this feature reaches the default Release viewer, users must be running this viewer on ADITI (ACME D, E, or F) for this feature to be used. See the wiki page for more information on how to try out this project viewer: http://wiki.secondlife.com/wiki/Linden_Lab_Official:Viewer-Managed_Marketplace_FAQ