CCFinder, find images with Creative Commons license

The issue of Creative Commons licenses is not peaceful, because the discord between many users on this type of license and those who are very sensitive to the use of photographs and other creations without the author's name is more than most. Personally I do not mind the free distribution, but not everyone thinks this way and I accepted. On the other hand, Flickr is a site where this happens a lot: the exchange of images that often loses its author and we must be ever alert to prevent future problems and conflicts with the true authors. Now taking into account these and other problems that affect us time to search for images, I found the CCFinder, a tool that is a search engine online photo which shows the results of CC-licensed photos.