Yelp reviews are getting both more positive and more negative. You might wonder how that’s even possible. But it’s actually pretty simple. In 2014, more customers left 1-star reviews on Yelp than they did back in 2005. But they also left more 5-star reviews.
That’s according to an analysis of over a million Yelp reviews conducted by Max Woolf using the Yelp Dataset Challenge. He found that in 2014, 42.6 percent of all reviews in the dataset were 5-star reviews, and 12.8 percent were 1-star reviews.
By comparison, in 2005 just 39.
from Blogger http://evangelinagius.blogspot.com/2015/01/yelp-reviews-are-getting-more-positive.html
Evangelina Gius 