works fine for the most part, but as of a couple days ago youtube tabs won't automatically discard any more when first opened, which is what I mainly use this for. Other than that I've not had any other real problems with this.

Edit: I originally gave this a three star review for the above issue, but it turns out Auto Tab Discard is interacting with UBlock Origin in a weird way and it's only when UBlock is active that I have this problem. Not really much I can do about it, but also not really the fault of this addon, so I bumped the rating up.