This cube is an invention of Joe's from many years ago. 

In the early conception stages Joe imagined a fantasic web site where users would post creations on an ever-growing virtual 3D cube bulletin board.  Early postings would exist on the inner cubes and new postings continuously add new layers of mini-cubes.  Users would then fly around inside this structure moving from posting to posting.  A community cube would be built of all the creativity.

Though still possible to create, funding is no where in site to add this great visual to the web site.