Hi all! Thanks for the great feedback. I did realize the title might have been controversial, but I have a small argument for it. A few weeks ago, there was the 14 year old who posted their rad iPhone game on HN. Their post did inspire me to post my own work. I have a tiny hope that someone else who's doing something like I am will see this and post their own work. I doubt it, but you never know! :D
You should be proud of what you've done outside of the fact that you're 15 - it's really cool!
If you're looking for praise because of your age+abilities I would warn you that this praise is short-lived, and efforts to do so can backfire to the delight of douchey tech writers: http://gizmodo.com/5830076/how-i-made-a-15+year+old-app-deve...