Update: ZapBing downloads images in 958px x 512px, which isn't terribly high res for most monitors. I tested this on a small-ish monitor using the Polaroid mode, so the quality wasn't an issue ...

Smooth, high-quality wallpaper is more likely to hold paint. If you want to paint over wallpaper, you should ensure it is in good condition with no peeling, bubbling, or significant damage, says ...