We need to build an application that allows you to configure a campaign (group-discount) for facebook, with info like:
* product/service description
* number of minimun users to get the discount
* expiration date
* payment info
After completing the campaign in the back-office, it will be published in facebook as a facebook application, where users can subscribe to the campaign and propose the campaign to other friends. If when the expiration time comes there are more than the minimun required users, it notifies all of them and executes the payment (this does not have to be part of the first version).
The back-end of the application must be built on Google App Engie, using Python preferably.
A good example of what we want to do is <[url removed, login to view]> but with only a group-discount campaing, and with a much simpler logic for this initial version.