273079 Facebook & IPhone application

We are in need of a Facebook and Iphone application which is related to event “Dance Night”. The main objectives of this application are:- 1. Publish an event with date, time, location & theme. 2. Search & invite friends who are already registered with application and also friends which are not registered with application. 3. Confirm / deny any request to join a event. 4. Display couples with images, already hooked up for the event. 5. Create group 6. Polling facility to promote vote for best dancer, etc after that event 7. Marketplace to buy and sell items. (No shopping cart needed)