I've added a "Wallpaper" album to my gallery. Yep, click the word "Wallpaper" to go there. I'm not a huge Internet Explorer fan but it does give you a quick way to set a web picture as wallpaper or "background". So, using Internet Explorer visit my wallpaper album, click the thumbnail of desired wallpaper to view it bigger. Wait, that's not big enough for wallpaper yet, click again to view full size. Then right click it and choose "Set as Background" from the menu. Done. If you are using another browser then you probably know how to save it and set the saved picture as wallpaper. And good for you!
Sample:
