I actually unintentionally started using one by installing Ghostery. I was under the impression that it was just for blocking invisible beacons, like buttons, t

I actually unintentionally started using one by installing Ghostery. I was under the impression that it was just for blocking invisible beacons, like buttons, that sort of thing, but it also took care of virtually all normal display ads. The effect was surprisingly nice, so I've left it enabled.