18. The system of claim 17 , wherein content being searched is organized according to a hierarchical categorization, the editable search refinement specification displaying a current search category and at least one parent category in the hierarchical categorization.
18. The system of claim 17 , wherein content being searched is organized according to a hierarchical categorization, the editable search refinement specification displaying a current search category and at least one parent category in the hierarchical categorization. 19. The system of claim 18 , wherein the instructions when executed further cause the system to detect an input to remove or adjust any category displayed in the editable search refinement specification and to search for another category within an editable element displaying a category in the editable search refinement specification.