15. The computer system of claim 11 , wherein the statistical data includes, for particular index-type search engines and search queries, data regarding positions at which the destination appeared in search results listings.
15. The computer system of claim 11 , wherein the statistical data includes, for particular index-type search engines and search queries, data regarding positions at which the destination appeared in search results listings. 16. The computer system of claim 15 , wherein the positions are specified in terms of search results page numbers.