Hi guys, I was wondering how sites like istockphoto.com, 123rf.com, and other decent stock image sites can tell if you've got a license to use one of their images or not? From what I understand, Getty will hunt you down to the end of the earth for "stealing" their images without a license (even if you've done so accidentally by using an image you found on Pinterest or Tumbler), but what about the other companies? I'm not against paying for images, but I am trying to find some free CC ones by searching. A lot of the good quality images I'm finding though are from stock photo sites. Which made me curious.. with some of the stock photos showing up on 100+ different sites (after doing a reverse image search), how the hell can they tell if each site has paid for usage rights or not? Thinking along those lines, if you were to upload an image to Wordpress with the EWWW Image Optimizer plugin installed and select the option to remove all EXIF information, can they track the image? Or has all the pertinent information been scrubbed? Appreciate your thoughts..