arooni: Great website, and a good idea IMO. I think most of what came to me was covered in other comments, and this may sound offhand, but I went to see your demo, then hit the back button and saw this "Code corrupted. Insert fresh copy" at the top right hand corner. I am probably nitpicking, but it caught my eye, so I figured I would drop in a comment.

Good luck. Great idea. I might consider it for my app too...