>The problem is what to do when you get a negative result. That's easy; if you don't know who made the image, then chances are you don't have the right to use

>The problem is what to do when you get a negative result. That's easy; if you don't know who made the image, then chances are you don't have the right to use that image. You find a new image that you do have rights to. You don't assume that the image has no owner just because you can't find the owner.