I'm exhausted. In my Marketplace shop I sell demos of my items and very often they are completely free. I always write clearly that they are demos and what's the difference between the demo and the full product, but too often dumb people rate my demos with 1 star... and they simply write something like "It's a demo!!" or "This tip jar takes 10% of the tips and gives it to the creator!". Now, I know there is that little button named "flag review", but can I use it in these cases? Is it an abuse? These reviews say the truth: they are demos, and those tip jars have a commission, but it is clearly written in their description!! What can I do to protect my business in these cases?