NYC-based coupon service 8coupons launched the NYC Money Map this week. The Money Map displays deals near the area you search on. It's pretty interesting as they display deals they sourced, user-contributed deals, and sponsored deals. I assume they will use the sponsored deals as their way of generating revenue from the map.

If they can get the word out to the local communities in NYC, then the businesses could load up the map with deal listings. This should reduce 8coupons foot cost by reducing the hours and cost to go from business to business looking for deals to post. 8coupons readers can also submit deals they find as they travel around the city. While I am normally not a fan of point systems, it could work very well here. For every deal a user submits they get x points and after they collect y points, they get a free voucher for lunch at one of the sponsored locations. The map also has customization capabilities to find things like Broadway shows, lunch coupons, etc. They could easily do custom maps for pizza chains, etc. -- lots of growth options. 

Here's an example of the Money Map: