J *****★★★
This extension used to be outdated until recently. It blocks Disqus, something I want. I compared it to Privacy Badger and it seems to work fine, however, when it lists blocked trackers there isn't any way to disable that particular blocked issue, whereas Privacy Badger does have a slide lever to allow or block just in case there is an issue with the page not rendering. PB adapts to behavior whereas Disconnect uses a defined list, so PB is better. It's fine, but I like the control of PB.