AlterGeo

AlterGeo an online project created to help people living in big cities, namely tell where and what kind of offer discounts or carrying out an action, you just need to mark this location on the map and you will be able to give hundreds of the same as you.
AlterGeo can also come in handy:
Find out where your friends are
Perform challenging tasks and learn more about your local
Always keep in your pocket a discount card, which itself adds to the list of places with discounts