Unfortunately like all the other similar extensions, this one doesn't save the user settings per tab and when you restart the browser, it returns to the default 100% volume and that's useless for me. I want an extension that will remember my setting of 8% for facebook. I already have an extension to take care of the volume for YouTube and remember it permanently, now I need one for facebook too and also that will remember my setting permanently. Until that appears as an option in this extension, my review will remain the same.