Works for me, I can give a star and write a review. Here is an example:
Viewing post in Dungeons! | A Mörk Borg Supplement comments
wow, ok. Not sure how I missed that all this time. I usually only rate the products that I have had a chance to go over thoroughly, so I have not clicked on the Rate this Game button a lot.
So, you are saying those reviews do not show up for anybody viewing the product other than the person who runs the game page?