24. The method of claim 22 , wherein (d) includes sending by the search engine to the client application instructions for displaying a first plurality of buttons selectable by a user, each button in the first plurality of buttons corresponding to one of the first suggested search query refinements and including text representative of that suggested search query refinement.
22. The method of claim 19 , further comprising: (h) receiving by the search engine from the client application a request to obtain the second refined search results; (i) effecting by the search engine a second refined search in respect of a second refined search query including the at least one first search term and at least one second additional search term, the second refined search query yielding second refined search results; and (j) sending by the search engine to the client application the second refined search results and instructions for displaying at least one second refined search result and a visual representation of a refinement relationship between the first search query and the second refined search query.