When a post has many pages of replies, the link to the last page has a stop value set to the current end e.g. start=21&stop=34. To get to the last post of a page, a refresh will not work, a previous page must be clicked to reset the last page link, or the stop must be manually set to 40. I think if the last page link always had a stop of 20 * page number, it would cut down on needless page hits, especially on very active game threads.