As a photographer who regularly has images used without my permission and finds them on commercial web sites as well as personal blogs I am distressed and discouraged that you would write about the Featured Image from Google Images which is nothing more than a tool that makes it easy to infringe on photographers copyrights. I do appreciate you recommending that people use public domain or Creative Commons licensed images but I can't tell you how many times I have found my images with the copyright marks removed and people acting as if they are public domain.