As the openmoko products have been discontinued, Openmoko Inc. is opening up the use of its Vendor ID for use by the Free and Open Source software and hardware communities. Open Source developers can register their devices to allocate Product ID (PID) for free. Details: http://wiki.openmoko.org/wiki/USB_Product_IDs.
MAC address (or address range) can be obtained in a similar way: http://wiki.openmoko.org/wiki/OUI#Conditions.
See also: http://laforge.gnumonks.org/weblog/2012/05/21/#20120521-open_registry_for_usb_and_mac_addrs.