This pipe is designed to be used to pull images from any page on reddit and format a feed that can be used as a source for the wallpaper in Windows 7 (see http://www.online-tech-tips.com/windows-7/rotate-windows-7-wallpaper-automatically-via-rss-feed/). Currently, the pipe is restricted to pulling from submissions that link directly to an image or that link to an imgur, Flickr, or min.us page.
Anything on Reddit can be turned into an RSS feed by adding .rss to the end of the URL (but before any parameters from a search)
Ex: reddit.com/r/pics.rss or http://www.reddit.com/r/EarthPorn/search.rss?q=1920x1080
Separate multiple feeds with a | (pipe character).
Pipe Web Address: http://pipes.yahoo.com/pipes/pipe.info?_id=46d8254bebc11add44b70edfd677832f