I think this would be a great addition to the site and I would like some feedback http://pastebin.com/1JKiQn8N
Very cool idea I think. Obviously a point system would need to be made which I assume may take some thought. Also, I would assume that you would intend for this rupee to be somewhere else as well as where you are logged in so that others could see your rank. Perhaps not next to every submitted time as that would probably look ugly. Just on everyone profile page may be best