The task is to create a facebook demo app that will basically allow the user to redeem a few coupons and then post that action (using graph API) to the users timeline, ticker and news feed (optionally status update too).
The app will be available to the user on a fan page as a tab. On clicking the tab the app loads within the context of facebook as an iframe.
The authentication and authorization must also be handled. Maybe objects, actions & aggregations will need to be created.
Remember coupons are static in nature and the app is purely a demo. For an experienced facebook developer the task should not take more than a few hours to complete. It would also help if you would be able to show a developer here how such a task can be accomplished and what are the best practices you recommend.