Social Wallpapering

Social Wallpapering is a community effort to classify, rank, and distribute high resolution images for use as computer wallpaper. You can save the images or easily set their image as your desktop background without downloading anything. As you rank items you like or dislike the site learns your preferences and recommends new images based on what it has learned.

If you like fine art you will find some there, like this fine Kandinsky that now adorns my laptop. If you're still looking for more try here.