people should be allowed to post a 100% honest review of the products they purchase. if they feel like they can't post an honest review, then why even bother having this section.
i think it's great when people post a review of your shop weather its a good review or a bad review. because it is the vendor's opportunity to improve and make amends.
if someone had post a bad review of your business, it is your opportunity to make it right and improve your business. how a seller handles these situations is very important since everyone is watching/reading to see if the seller will make amends. good communication is the key.
it's much easier to keep a customer than to acquire a new one.
for the people that posted saying they didn't understand why the op did the review or that it was unfair. i don't really understand where you are coming from. what did you think the op should do? is this section for good reviews only? bad reviews not welcomed?