Yelp will post any review before doing any verification, by the time they get to it the damage is already done.
I own a campground in New York state, a women from Washington state gave me a one star rating complaing that there is an "evergreen speedway" nearby where the sounds of the engines and smell of exhaust filters into the camp. Evergreen speedway is located in washington, thousands of miles away, they are not writing about my campground i contacted the reviewer to no avail i also called yelp help line and they didn't care and were not removing the post. The man was extremely rude saying they have freedom of speech. Insisting the reviewer has the right to say whatever they think. I reported it to yelp also and they emailed me saying it can take a few days to look into it. So in the mean time the bad review sits there, who wants to camp at a noisy campground? They also hid 5 five star reviews from my page..