"In this example, jbarr-public and jeffbarr-public are bucket names; /images/ritchie_and_thompson_pdp11.jpeg and /jeffbarr-public/classic_amazon_door_desk.png a

"In this example, jbarr-public and jeffbarr-public are bucket names; /images/ritchie_and_thompson_pdp11.jpeg and /jeffbarr-public/classic_amazon_door_desk.png are object keys." I think this should be: "In this example, jbarr-public and jeffbarr-public are bucket names; /images/ritchie_and_thompson_pdp11.jpeg and /classic_amazon_door_desk.png are object keys."