bluespice
But let's face it, if web devs were conscious about keyboard usability we'd at least see tabindex html property used sometimes, and it's been around for a while.
Here's an useful link for current users, so you don't have to look too deep: https://www.last.fm/settings/account (Hint: "Delete account")
But I love the idea and you should definitely keep it up. People asking "why?" don't really understand what passion for coding means :-)
However the animation and rendering is just very slow for me on Chrome + quad, about 5-10 FPS. I won't even try on Android.
This could have been greatly improved by using CSS3 animations, there's even a drop-in jquery library that makes this an easy fix: http://ricostacruz.com/jquery.transit/
With that said, the effect is overused and tacky. Message could have been delivered more quickly and elegantly.
I felt as if visiting that link was just a waste of time, like watching an old movie I've seen and looking for changes in subtitles.
Edit: parallax/tacky, call it what you wish. I was thinking of this while writing the comment: http://prinzhorn.github.com/skrollr/ (note: every great thing can be ruined my misuse, I like that library.)