Microsoft has launched a Webmaster Tools program to match Google’s Webmaster Tools. While it is not as feature heavy as Googles tool, it is a start and better than Yahoo’s Site Explorer. Adding your site and verification is simple as adding a meta tag to your header.
Microsoft does not provide a great deal of information. Microsoft does provide a domain rank between 1 and 5. They also provide the top outgoing links and top incoming links. Thats about it. The one down side is Microsoft does not update (spider) your site immediately. It has been 2 days and my site has not been updated in the Webmaster Tool.