> Dean began documenting her findings, starting with serial offenders from the Facebook groups. In a list of 17 people who reviewed SavantCare on Yelp, she found what she called “a suspicious pattern”: 10 of them had reviewed the same dentist’s office in Los Angeles, nine had raved about the same California wedding DJ company and five claimed to have visited the same Mountain View tattoo parlor. Five of the accounts,…
Yelp makes 96% of its revenue on advertising.
They probably make more money if reviews for a restaurant are in question. If someone spends 20 minutes clicking around on a list of restaurants to read the reviews and see if some seems genuine or fake... yelp makes lots of money.
If yelp reviews were 100% trusted, everyone would just click once, and then go to the highest rated restaurant.