This is the latest data on identifying the search engine spiders. You can get more information by viewing your site's visitor log reports. Information on blocking the Search Engine Spiders with a Robots.txt file can be found at robotstxt.org.
MSN has not updated their page
http://search.msn.com/msnbot.htm yet to officially address the
specific bots they are using. If you wish to block a specific bot in
your robots.txt file use the associated bot specific name as the