This photo was taken by me in 2008. Using Google's Search By Image feature I have found this image being used on dozens of commercial Web sites without my permission.
In my conversations with the Web site owners they tend to point the finger at their Web site designer. Apparently, many Web designers see Flickr, as well as the rest of the Internet, as their own personal photo library.
I've had a few sites agree to pay to license this photo. Many other take it down after a nice DMCA take down notice.