Tried TinEye a couple of times: first time a year or so ago, but it was not finding images, often returning zero results. Then I tried HagGeowanni's reverse image search Add-On which found the same images in 50 or more locations. I stuck with that right up until recently when as reset lost all my add-ons and I was tempted to try TinEye again to see why so many find it so good. But it just doesn't work: I run a search, TinEye can't find the image at all, yet when I use HG's add-on, it finds them all no problem. I presume that TinEye fails to work in a browser setup to stop my usage from being tracked.