Findings:

• MSN Messenger
• MSN Gaming Zone
• MSN Search
• msn (user)
• MSN 8
• Reserved names on MSN
• MSN blocks non-Microsoft browsers
• MSN Chat
• MSN Explorer
• Hotmail
• MSN
• Hotmail Plot
• hotmail (user)
• Hotmail Inbox Protector
• Finding the origin of a Hotmail message
• procmail recipe to drop (forged) Hotmail spam

If you Log in you could create a "MSN Hotmail" node. If you don't already have an account, you can register here.