... to always click "Save" when you are prompted for your comments. If you don't click Save then your comments won't be updated and your scores won't be listed in the tournament rankings!
So did anybody notice that slight change to the screens in the arcade? When you're done playing a game you're now prompted for the high score at the top of the screen instead of the bottom. Some people didn't even realize that it was prompting them for comments at the bottom.