33. The non-transitory computer-readable memory device of claim 32 , further comprising: one or more instructions to receive an initial query; one or more instructions to receive a second query following receipt of the initial query; one or more instructions to determine whether the received second query is a refinement of the received initial query; and one or more instructions to associate the received second query with the received initial query upon determining that the received second query is the refinement of the received initial query.
32. A non-transitory computer-readable memory device incorporating one or more instructions, comprising: one or more instructions to receive, from one or more client devices, a plurality of refinement query suggestions that are refinements of a particular search query, where each refinement query suggestion, of the plurality of refinement query suggestions, has been received as a refinement of the particular search query a particular quantity of times; one or more instructions to cluster the plurality of refinement query suggestions to form a plurality of clusters; one or more instructions to identify, for each refinement query suggestion, of the plurality of refinement query suggestions, the particular quantity of times that the refinement query suggestion was received as the refinement of the particular search query; one or more instructions to identify, for each clustered plurality of refinement query suggestions, of the formed plurality of clusters, a particular refinement query suggestion that corresponds to a highest identified quantity, from the identified particular quantity of times that the refinement query suggestion, of the clustered plurality of refinement query suggestions, has been received as the refinement of the particular search query; and one or more instructions to present the identified particular refinement query suggestion from each of the clustered plurality of refinement query suggestions in response to receiving the particular search query.