Looks like this thread has been opened back up a bit. Here's a link to the Live Search Webmaster Forum with FAQs about indexing optimization for MSN.

**I added a space after "http" to be able to post this link, so just make sure to take it out after copying and pasting into your browser.
http ://social.microsoft.com/Forums/en-US/webmastercrawling/thread/770e1046-0fb0-4e6f-9f95-cdb750934aef