18. The computer system of claim 13 wherein the weblogs are further based on (iv) a number of times a weblog mentions, over a period of time, a URL relevant to the search query.
18. The computer system of claim 13 wherein the weblogs are further based on (iv) a number of times a weblog mentions, over a period of time, a URL relevant to the search query. 19. The computer system of claim 18 wherein the weblogs are further based on (v) a length of time between citations of the URL at the weblog.