The NoScript extension is the 5th most downloaded extension for Firefox (https://addons.mozilla.org/en-US/firefox/extensions/?sort=us...). If you want to show a blank screen or a broken website to those users, that's up to you. Some of them may really want to see your site, so they might try to figure out which of the twenty domains they should enable, and which of the thirty they should enable after that one doesn't help them. Most will likely click on the back icon and see what's next on the list.