Its often you come across new Coldfusion Blogs, but BlogFusion seems to be a well rounded complete package, though it does cost $59 (£25). You can see a demo of the front end here, as well as the back end. The back end looks complete with features like:
IP/Spam Blocking
Comment Subscription Options
Sidebar ordering
Basic Trackback/Comment/Entries stats
and more...
The only problem with the site is that the more information page was currently down due to a datasource error.Overall the blog looks features rich, but with soo many free options out there i'd wonder how the take up of this is. Though if i had to put a business blog in place this one could just fit that bill.