4. The method of claim 1 , further comprising: modifying one or more of the plurality of candidate queries before sending the plurality of candidate queries to the ranking engine.
4. The method of claim 1 , further comprising: modifying one or more of the plurality of candidate queries before sending the plurality of candidate queries to the ranking engine. 5. The method of claim 4 wherein modifying one or more of the plurality of candidate queries comprises one or more of dropping search terms, replacing search terms with synonyms, or introducing new terms.