Blogs : Movable Type : Movable Type. The folks using Movable Type have the ability to use categories, one reason I keep thinking of moving to that tool. Now the categories can have a hierarchical structure thanks to the plugin by Chad Everett. I find a tree structure is a handy way to move through data. Now MT users can provide that option to their users. [Catalogablog]  10:40:23 AM   [Feedback ]