As we are a mobile-centered web site, we redirect almost all user agents to our WAP version in order to handle misleading user agents by most handsets.
Because of this, we cannot validate the site as the validator bot gets redirected to the WAP version, which has another authentication key.
To properly handle validation, I need to know the user agent used by the MSN crawler used for both authentication and indexing.
P.S.: Wow it must have taken at least 30 minutes to load this page! Actually it's still loading! Microsoft servers definitely have a high timeout tolerance!