The Privacy Badger is excellent! Non-intrusive tracker blocking to stop those pesky ads. Many thanks to the developers for putting me on the right path with a Firefox upgrade.

The first time I tried using it, idk if it was buggy or I just wasn't using it correctly but it didn't work right so I removed it. I came back to it about a year ago and glad I did. It's one of the best in its class. Good companion to something like AdBlock Plus.