Anti-Competitive or Abusive Behavior. Examples include, but are not limited to:
posting hostile or inauthentic reviews or comments on a competing merchant's items,Imo ppl should report false reviews.
There is a button bellow the reviews "Flag this review".
Your also able to comment the review.
" IMO, no review is better than a bad one."
Thats true, but bad reviews can be changed if u listen to the buyer complains
For example last week i got my 1st review in a dance ball (3 stars review). Because the "Dance Ball" didnt had any feature to change dance, ppl had to unsit and sit again to change to another dance.
I send an IM to buyer thanking him for the feedback, i re-scriped everything with the new feature to "change dance", sent him the new product free of charge and he changed hes review.
Since it was the 1st review i just could have deleted the item and re-list again with 0 reviews and dont care about the customer. But my main "concern" is to make customers happy, a happy customer will return and buy again from you.