26. The method of claim 23 , wherein presenting content in accordance with the content specification action comprises adding items to the search query result set that do not satisfy the search query.
23. A method for delivery of content from a corpus of data, the method implemented by a computer system including a search engine, a result processor, an interface, and a memory, the method comprising: receiving a search query for searching the corpus; generating a result set in response to the search query, the search query result set including one or more items from the corpus; identifying a characteristic corresponding to a plurality of items in the search query result set; identifying a rule corresponding to said characteristic, said rule defining a content presentation action; determining a percentage of items in the search query result set that correspond to said characteristic; comparing the determined percentage of items to a threshold percentage, wherein the threshold percentage is a predetermined percentage of the total number of items in the search query result set; and presenting content in accordance with the content specification action when the determined percentage of items exceeds the threshold percentage.