Should be a script concerning contributers & clients.
Clients explain what they want and deposit money, the clients wish gets posted on a webpage with all other client's wishes as well. Contributers create an account and see the entire list of wishes created by the clients, contributers react, the client logs in regulary and picks the best idea offered by an contributer. The winning contributer automatically receives a percentage of the money deposted by the client in the very beginning. (Afterward picking the clients wish should automatically be removed.)
Please PM for details.
(English speaking person preffered)