Help
Internet Explorer: Right click on the image and select "Set as Background".
Firefox: Right click on the image and select "Set as Desktop Background".
iPhone / iPod: Touch and hold on the image and select "Set as Background".
Sony PS3 / PSP: Hover over the image & press Triangle. Then goto File > Save Image. Exit the browser and goto Photos. View the image and press Triangle. The "Set as Wallpaper" icon is the 6th icon along.