For years, I've relied on the ratings and reviews in the Software Center to guide some of my application choices, when there are multiple applications that are available for a given need. Independent reviews from users can be useful to nudge me away from poorly working applications and towards ones that are superior. (I'm fully aware that some people may find those reviews and/or ratings not useful to them, but they are useful to me.)
I have found that I can neither view nor submit ratings or reviews for snap applications that are accessible in the Software Center of Ubuntu 18.04. I can find no answers to this on various snap web pages or in the Software Center itself as to why this is. Is it possible to publish ratings and reviews of these snap apps, and if so, where add my own ratings and reviews and view those submitted by other users?