There's a debate raging within Twitter about whether traditional blogging platform WordPress is also a CMS. Our take: many organizations are using WordPress as a CMS. That makes it a CMS.
Yesterday we released a new evaluation of WordPress into our Web Content Management research stream. Subscribers can download the complete, 13-page review here. (If you are not yet a subscriber, you can try out a free research sample here.)
WordPress fits into our "Simpler Products" category. A larger enterprise would almost never want use one of those tools for a major web property. But they offer useful alternatives for SMB scenarios, as well as simpler projects.