I'm one of the developers behind this app, and I'm really happy that it's getting some attention for this. One of the biggest problems with passbook is that it's hard for people to "get" the concept until they see it in action. The Valpak app provides a very low "barrier" to getting a pass. You don't have to have an account or sign in, and there's tons to choose from with just a few taps. It's easy to see what Passbook does and why it's beneficial with this app, and I'm very proud of it!