19. The non-transitory computer-readable medium of claim 17 , further comprising a search engine component that uses the relationship value to determine whether to augment a query result set with the item.
19. The non-transitory computer-readable medium of claim 17 , further comprising a search engine component that uses the relationship value to determine whether to augment a query result set with the item. 20. The non-transitory computer-readable medium of claim 19 , wherein the search engine component inhibits the item from being added to the query result set if a popularity level of the item exceeds a threshold.