15. The system of claim 9 , wherein using the language statistics to generate the ranking of results comprises computing a language selection weight for each of a plurality of content items, wherein the language selection weight is based on a query language preference of the search query and respective selection counts for a particular language matching the query language preference for each of the plurality of content items, wherein the rank of a given content item is based on a ranking score that is based at least in part on the language selection weight of the given content item.
15. The system of claim 9 , wherein using the language statistics to generate the ranking of results comprises computing a language selection weight for each of a plurality of content items, wherein the language selection weight is based on a query language preference of the search query and respective selection counts for a particular language matching the query language preference for each of the plurality of content items, wherein the rank of a given content item is based on a ranking score that is based at least in part on the language selection weight of the given content item. 17. The system of claim 15 , wherein the language selection weight for each of the plurality of content items is computed according to: 
 language selection weight=bias1+( A ·bias2)+( B ·bias3) wherein: A is a percentage of the total users clicking on the content item having a language preference matching the query language preference; B is a click through percentage of the content item for users having a language preference matching the query language preference; and bias1, bias2, and bias3 are biasing factors.