The mechanisms that third parties can use to increase surplus

Look over the list of the mechanisms that third parties can use to increase surplus .Choose one of the ten mechanisms and give an example of a specific situation where you think it would be effective and state why you think this would be the case.
Then, look over the list of risks in using a third party, Choose one of the eight risks and give an example of a specific situation where you think a third party should not be used because of this risk and explain why you feel the risk is an obstacle in this situation.