WebReference.com - Part 3 of Chapter 7 from Essential Blogging. From O'Reilly (1/4).

The Radio blogging tool really began life as an earlier product from UserLand called Frontier, a powerful content management system (CMS). A CMS is designed to make web publishing much easier and more powerful. At the simplest level, a CMS isolates content from presentation. This lets you alter your web publishing with a few clicks of the mouse rather than hours or days of HTML changes.

For example, a CMS lets you globally change your web site's look and feel just by applying a theme or style to it. A CMS also lets you globally manage and fix broken links. If this sounds like Radio, you're correct-Radio is a full CMS and has features normally found in larger, more complicated, more expensive products.

One of the problems with typical web publishing is the huge number of individual files involved. Radio's object database, the .root files it uses, takes care of managing all the files involved in your blog. Additionally, if you are a developer, you can use Radio's object database in your own applications where you need storage of variable length objects.