I put together my Sword & Sworcery image into convenient iDevice wallpaper sizes to help spread the Sworcery love.
To save them onto your device, simply scroll to the correct image, touch and hold for a second or so, then select 'Save Image' from the popup menu. And like magic it will appear in your camera roll. Ain't technology grand?
iPhone 4/iPod Touch 4th Gen (640x960)
iPhone 3GS/iPod Touch 3rd Gen and earlier (320x640)