Google has sitemap.xml, Yahoo! has urllist.txt, but what does MSN have so you can tell the search engine what pages are available to crawl?
I mean MSN spiders pretty aggresively. Just like a tennis player plays aggresively, or an athlete runs quickly.
enough off-topic, if you're going to continue on this thread, please make sure it's about MSN sitemaps.
but msn does recommend to have sitemap Add a site map. This enables MSNBot to find all of your pages easily. Links embedded in menus, list boxes, and similar elements are not accessible to web crawlers unless they appear in your site map. http://search.msn.com.my/docs/siteowner.aspx?t=SEARCH_WEBMASTER_REF_GuidelinesforOptimizingSite.htm&FORM=WGSM