erm it says “by the oatmeal” right at the top just under the title, which is pretty much the best reference you could ever do. It even has the website url, to the right under the title graphic. So not exactly taking credit…. at all, in any way shape or form. Obviously he has reposted it, in order to show his own readers something he thought was cool, but that is entirely within his rights to do so. So I don’t really know what your problem is.