15. The method of claim 12 , wherein determining the topic comprises performing a search of a search index using the first search query to identify the topic; and wherein the method further comprises correlating the topic to the second search query, the second search query relating to the topic but being different from the first search query.
15. The method of claim 12 , wherein determining the topic comprises performing a search of a search index using the first search query to identify the topic; and wherein the method further comprises correlating the topic to the second search query, the second search query relating to the topic but being different from the first search query. 16. The method of claim 15 , wherein the second query is associated with the topic based on historical data for queries about the topic.