10. The system of claim 8 , wherein the one or more computers are further operable to perform operations comprising: ranking the mobile search results and the generic search results in an order, the ranking being based on the respective search result quality scores; and removing one or more duplicates from the order.
12. The system of claim 10 , wherein removing the one or more duplicates comprises: identifying a specific mobile search result that identifies a first uniform resource locator; identifying a specific generic search result that identifies a second uniform resource locator, the second uniform resource locator being different from the first uniform resource locator, the respective resources located at the first and second uniform resource locators being different versions of a same web page; removing the specific generic search result from the order; and if the specific generic search result had a higher rank than the specific mobile search result, moving the specific mobile search result to the position in the order that the specific generic search result occupied.