[nano81]

Why did you change the title? The author didn't make any claim of Airbnb filtering potentially negative reviews. Airbnb didn't allow him to post a review in the first place since he didn't actually end up staying in the room (which I think is a reasonable policy that covers 99% of cases just fine). The point of the article, and what the original title of the article conveyed, was that there are some situations where this is not optimal and where Yelp's review model has an advantage.

(Edit: Fixed now)