16. The computer readable memory device of claim 15 , the operations further comprising: receiving search results, each search result referencing a resource and including a snippet of text extracted from the resource; processing the search results to extract data to store in the search history data; and storing the extracted data in the search history data.
17. The computer readable memory device of claim 16 , wherein processing the search results to extract data to store in the search history data comprises extracting domain names from the search results.