For several weeks I have been seeing this kind of referrers every day in my server log (example):
"http://www. google. com.ph/imglanding?q=d1%20image search term&imgurl=http:// www. example blog name blog .co.kr/ . . . /006/example.jpg&imgrefurl=http:// www. example blog name .co.kr/ . . . =&h=510&w=770&sz=104&hl=en&itbs=1&tbnid=bCRbc4cDmb8o6M:&tbnh=94&tbnw=142&prev=/images %3Fq%3Dd1%2Bimage search term%26hl%3Den%26tbs%3Disch:1&tbs=isch:1&start=0"
(The words in italics and the ellipses are obscuring specifics, and several spaces have also been added by me in the above referrer string.)
The image file example.jpg (example, name modified here) has nothing to do with the contents of my site or the picture eventually requested from my server, but is a file on this blog example. The full referrer string resolves to that example.jpg when I have entered the string in my browser. However, according to my log my server has been asked to deliver my image.jpg (file varies). N.B. That file name is nowhere in the referrer string. Still, the image search term in the string is always related to my image.jpg, but never to the example.jpg.
All these requests come from IPs in the Philippines. Image files requested from my server varies somewhat. The site named in the string can be any Far Eastern, not just Korean. Sometimes Yahoo image search is used in a similar way. My hot-linking protection stops my image.jpg from being served, still this continues, so I am curious as to what is going on. Hopefully I have not compressed my question into incomprehensibilty.
[edited by: engine at 3:45 pm (utc) on May 12, 2010] [edit reason] examplified [/edit]