The newest addition to the blog engine.

From the subversion commit comment:

Some refactoring to avoid code duplication
Added support for CommentsAtom - a feed with all of the comments in a blog, used for tracking purposes by the blog writer

Now you can access http://the_blog_url/Syndication/CommentsAtom.aspx and get a feed of all the comments.

Useful as a tool for the blog writer, as it enables tracking of comments all over the blog

as usual  -  sources are here.