It's great at what it does, but... even if I turn hiding off and tell it only to work on one specific website and set filter words to one specific website... 3 different layers of "this should not touch this other website I don't want touched", this extension being on breaks ebay, utterly and completely. You can't sign in, you can't add to cart once you are signed in, lot of functionality breaking. I tried all kinds of settings tweaks, the only way to get the website working was to fully disable the extension while I was using it.