7. The method of claim 1 , wherein the determining of the rank includes calculating a weight of each of the plurality of equivalent keywords.
1. A method, comprising: selecting a plurality of equivalent keywords responsive to a search query; determining a rank of each of the plurality of equivalent keywords, the rank being based on parameters including a number of bids on items matching the search query and a number of items matching the search query being placed on a watch list; selecting a plurality of most highly ranked keywords from the plurality of equivalent keywords; and preparing a response to the search query including the plurality of most highly ranked keywords.