Examples can be seen on Yelp, Zomato and TripAdvisor
Why people use these networks:
To find, review, and share information about brands, products, and services, as well as restaurants, travel destinations, and more.
How they can benefit your business:
Positive reviews bring social proof to your claims. Handled well, you can resolve issues with unhappy customers.
Consumer review networks give people a place to review brands, businesses, products, services, travel spots, and just about anything else.
Reviews are a type of content that adds a lot of value to many websites and online services—think about the buying experience on Amazon, or the experience of searching for a local business on Google Maps. Consumer review networks take it one step further by building networks around the review as a core part of the value they provide.
Source: 10 Types of Social Media and How Each Can Benefit Your Business | Hootsuite Blog