Hello, I justed to know if it is possible to know which visitor (from which source, adwords, SE, banner, direct...) clicked on a certain adsense ad. I know how to ckeck which adblocks have been clicked on but I want to know which traffic sources are profitable. I am already using Google Analytics but the problem here with the adsense ads are that you cannot track the click, or do you know how to do it? Thanks a lot.