BENEFITING THE RIVERSIDE COUNTY DEPUTY SHERIFF RELIEF FOUNDATION. What is Amazon Smile? How does it work? Amazon Smile is a program that donates 0.5% of eligible purchases to a charity of your choice at no cost to you. Simply go to smile.amazon.com, log in with your existing Amazon account, and select the Riverside County Deputy Sheriff Relief Foundation as your charity. Every purchase you make helps support deputies and their families in times of need.