> 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, she noticed, had even reviewed the same moving company in Florida.

SMH... I mean, how difficult is it for Yelp to catch this?!? Hire a high school student with interest in data analysis, and you'll catch these idiots quickly.