In preparation for WordCamp Seattle, Windows Live Writer developer Brandon Turner created three new plugins to work with WordPress blogs: 

• First plugin lets you easily change title & tagline of a blog. It integrates with Twitter so you can use your current Twitter status as blog’s tagline. Only status messages that’re not @replies or those that contain links’ll be used.
• Second is designed to help manage blog comments from within Windows Live Writer. Comments’re categorized as “New,” “Approved,” and “Spam.” You can also click to view blog post in case you want to respond to commenter on your site.
• Final plugin lets you add custom fields to your blog. After initial setup, dialog box’ll show custom fields across top as links you can click on. From that point forward, every time you publish via WLW, you can select from available custom fields and include them in your blog post.

More info: Download