Also, unrelated, I had a nice long discussion with my insurance agent about posting social media web review sites and the potential of it exposing oneself to personal liability claims from the business owner when the reviews accuse the business of something shady without proof to back up that claim.
If you’re worried, use a public WiFi or unlocked access point to post the review using a burner Gmail addy. Good luck to them proving who posted it, but it will still affect their rating score.