May 22, 2014 — Health officials say online restaurant reviews can turn up unreported foodborne illness outbreaks. In New York City, Yelp reviews led officials to three restaurants with food handling problems.
Nov 8, 2013 — Restaurants with a "weak" reputation are more likely to write fake positive reviews, a study finds. But chain restaurants, which do not benefit greatly from Yelp, are less likely to commit review fraud.
Sep 23, 2013 — New York's attorney general announced penalties Monday for attempts to manipulate consumers. Nearly 20 companies admit to writing fake online reviews on consumer-oriented websites.
Dec 9, 2012 — The next time you are about to post a scathing review of a business on a site like Yelp or Angie's List, you might want to think twice. This week, a housing contractor sued a former customer for $750,000 in defamation charges after she posted a negative review.