Going back a little to the sitemap issue, I was wondering if someone could tell me how many internal links one should have to the sitemap? I have a customer who has unobtrusive links to the sitemap in the header and footer of every page on the site. From what I've read so far, it seems that one link at the bottom of the homepage to the sitemap is plenty. Why is that? Is it harmful to have several links to the sitemap? I much appreciate the help!