In addition to categories: http://forums.autodesk.com/t5/a360-drive-ideas/add-categories-in-the-new-a360-drive/idi-p/6294652
we also need tag capabilities. The difference referenced here: http://usabilitypost.com/2008/10/17/categories-vs-tags/
Basically, we could use categories to organize folders/files in a tree structure like by clients or projects. We would also be able to tag folders/files with attributes across projects (like skid/facility) etc.