I can't recall where I saw a site navigation laid out in a cube but I thought it was unique when I first encountered it. What I didn't realize was the increased

I can't recall where I saw a site navigation laid out in a cube but I thought it was unique when I first encountered it. What I didn't realize was the increased engagement the cube navigation led to. It was something new and interesting...I suspect that will be the case with other users too. The closest thing I can find that resembles it: http://www.paulrhayes.com/experiments/cube-3d/ http://www.paulrhayes.com/experiments/cube-3d/ The author posts that this solution is for a "form that is too long", sometimes that is unavoidable (imagine a mortgage application). A cube based form could help user drop off by cueing the user to what was finished, what is next, and how much is remaining.