On a recent episode of The People's Court, a defendant sounded off on bad Yelp reviews affecting his business, going so far as to bring up his own experience with the company's alleged extortion practices. (Starts at around the :30 mark.)
What the court case was about isn't important. What's important to note was that the defendant brought up the accusations while under oath. "Yelp contacted us and said, 'i you advertise with us, we'll make sure those get filtered out.' We refused to advertise and that's what you see when you go on Yelp," he testified.
When asked about the must-see-TV moment, Yelp sent SFist the following statement:
"The reason more than 100 million people turn to Yelp each month is because they trust the reviews and ratings to give them an accurate prediction of what their experience will be with a local business. Contrary to this person's misinformed claim, Yelp's efforts to protect the integrity of its reviews treat all businesses equally regardless of whether they advertise or not. Claims to the contrary have been debunked by media and academics, dismissed repeatedly by courts and can be proved false via a simple search on Yelp."
Aside: this right here is the greatest moment ever on The People's Court.