Netflix is adding a way to give a thumbs-up, double thumbs-up, or thumbs-down to a show or movie while you’re watching it on mobile, which could give you an easier way to teach the streaming service’s algorithms about your viewing preferencesNetflix is adding a way to give a thumbs-up, double thumbs-up, or thumbs-down to a show or movie while you’re watching it on mobile, which could give you an easier way to teach the streaming service’s algorithms about your viewing preferences