Working on a global CMS project and was able to sneak a little of my past into a presentation to illustrate a point...
Content may look elegant on the surface, but once you dive into the user's experience to search and share, frustration abounds.
Having explored and studied this library: (http://www.bookofkells.ie/old-library/), antiquated information mangement systems still work, they just take too much time to figure out: http://en.wikipedia.org/wiki/Cartesian_coordinate_system
Make it work for your users, not the other way around. Please, no step ladders to reach for the Z axis.