I'm sure there are several caveats to this technique (i.e. situations under which Referer isn't sent, potential for being spammed as a result of bogus Referer URLs), but I can not talk to all of these. The Wikipedia webpage could be a fantastic starting point. Incidentally, when you constructed a https://than-rak05936.blogcudinti.com/34267448/a-simple-key-for-backlink-unveiled