Owner of 3 image sites here... page views down over 60% in the past few days and my livelihood is in severe jeopardy. I'm not quite ready to block either Google or Bing, but I am considering re-working the sites so people would have to actually visit the site to get the high-res un-watermarked version. Not sure exactly how that would work.
Before I go making changes I'd like to verify exactly how much traffic I'm not getting from image searches anymore. Can anybody tell me how to track it? I can't find it in Google Analytics anymore... nothing helpful in Webmaster tools... do I have to comb through my Apache logs, or is there a better way to tell how much traffic is coming from image searches?
If it turns out that I'm no longer getting ANY traffic of consequence through image searches then there is little to lose by either blocking through htaccess or a site re-work.