You can see people that you are connected to on Facebook and which deals they are planning on going to. Some kind of social aspect for coordinating with your friends.
You could find deals going on in your area from your computer instead of just on your cell phone
This would be a section of the app that would be the guaranteed best bang for your buck.
This would be a way to gamify the app and give tokens or badges to people that regularly go to places as power users