Windows only: John's Background Switcher—a free utility that rotates your desktop wallpaper using photos from sources like Flickr, Facebook, Picasa, or just your desktop—has updated to add support for RSS feeds. That means the popular wallpaper tool now supports sites like deviantArt, LOLCats, and pretty much any other photo site with an RSS feed. If you're keen on keeping your desktop fresh, John's Background Switcher is a godsend. John's Background Switcher is a free download, Windows only. Thanks Chris!