Usually watermarked images are a real non-starter, but, in a discussion about property rights, it feels more than appropriate. Sure, I could have found this cartoon in its original source, right-click saved, and spread the meme. The author might be happy to receive the additional distribution, but - the fact that this image was watermarked - really makes it quite clear the original publisher actually established intellectual property around this work to be compensated for usage. Okay, time to...