26. The computer-implemented method of claim 25 , wherein each of the search definitions is formulated to include a constraint set that is unique, and wherein the constraints of the constraint set are selected from a group including a keyword constraint, a category constraint, a search parameter constraint, and an attribute constraint.
26. The computer-implemented method of claim 25 , wherein each of the search definitions is formulated to include a constraint set that is unique, and wherein the constraints of the constraint set are selected from a group including a keyword constraint, a category constraint, a search parameter constraint, and an attribute constraint. 29. The computer-implemented method of claim 26 , wherein each constraint set is selectable by the user to display associated data items.