If you're following the system you can safely ignore this post, unless you're interested in CSS.
Check out the atom feed for this blog. First notice that it's an XML feed. If you view source on the document, you can see the atom xml format. Second, notice that it's a pretty darn good looking XML feed. Here's another example of an xml feed. See how this one isn't as nice looking.
I haven't figured out what part of the XML/HTML specs allow you to markup XML using CSS the way these blogger guys have, but it sure is nice. If they included a link to the comments in the atom XML feed I would almost rather use that as my blog style.