One of the most important things you can do for a website is a "SiteMap":http://tardis-db.co.uk/2007/05/ysc-sitemap.html "SiteMap":http://tardis-db.co.uk/2007/09/job-interview-mans-worth.html which is more designed for the user than the web crawler. By adding a page with hyperlinks to other pages you might have your creating a path for your user to naturally follow to get the information their looking for more quickly. Keep in mind that Dividing Large sitemaps into sections is easier for the user as well.