In the table below, U.S. Ranking, % U.S. Traffic and Average Monthly U.S. Traffic (unique visitors) data are sourced from Alexa. Businesses should strive to get business reviews on business review websites that are going concerns, review sites that people know about (and go to) and that are relatively friction-less (sites consumers have log ins or can go in easy to leave a review).

Average monthly US traffic (Alexa): 158.03 million
US ranking (Alexa): 1
Business reviews for: any business

Google My Business is a free tool for businesses to manage their online presence across Google, including Search and Maps. Google My Business puts business data on Search, Maps and Google+. Google customer reviews show up in search and are known to bolster SEO, so they are essential to the credibility of all businesses. Your business should aim to be on Google’s snack pack in order to be readily found when consumers perform a local search.

Average monthly US traffic (Alexa): 85.57 million
US ranking (Alexa): 3
Business reviews for: any business

Facebook is a social networking platform where users can create profiles, upload photos and videos, send messages and keep in touch with friends, family and follow their favorite businesses and brands. Since customers are connecting more with brands online, It is pertinent that your business is actively monitoring your social media mentions on social media platforms at all times. Facebook is gaining momentum towards being one of the most popular business review sites. Most users on the site already have a Facebook account, so the process to leave a business review is relatively friction-less.

Average monthly US traffic (Alexa): 85.44 million
US ranking (Alexa): 4
Business reviews for: e-commerce related transactions

Amazon is a popular go-to business review site for e-commerce products. For companies who do any amount of e-commerce, Amazon is a key source of information. While Amazon as a review website is more targeted and fitting for Amazon marketplace partners, it is a worthy site to note, especially for retailers about what customers like about certain products and how the service aspect of transactions were handled.

Average monthly US traffic (Alexa): 40.47 million
US ranking (Alexa): 52
Business reviews for: any business

Yelp is a review website where users can publish reviews about local businesses. Yelp has become a name synonymous with business reviews, as the site has over 102 million reviews and counting. As the world’s largest outlet for online customer reviews grows, it might be time for all small businesses to start caring about what consumers are saying online; and more specifically, about their Yelp reviews.

Average monthly US traffic (Alexa): 28.27 million
US ranking (Alexa): 88
Business reviews for: any business

TripAdvisor is an travel website company where users can leave business reviews of places they’ve visited. Users can also book rooms, find flights, discover to do and reserve tables at participating restaurants. TripAdvisor operates websites internationally in over 25 countries.

Average monthly US traffic (Alexa): 10.5 million
US ranking (Alexa): 402
Business reviews for: any business

YellowPages is an online internet yellow pages directory owned by YP. YP is a local marketing solutions provider that focuses on helping local businesses (and the communities within) grow.
Companies can manage their reviews on the review site after claiming a free business listing on their page.

Average monthly US traffic (Alexa): 6.15 million
US ranking (Alexa): 824
Business reviews for: any business
The Better Business Bureau aims to help people find and recommend businesses, brands and charities they can trust (bbb.org).

Based on a business rating review system, BBB educates consumers and assists people in finding trusted businesses. The Better Business Bureau tries to protect consumers from fraudulent business or scammers. Company profiles on BBB contain a short company bio and a history of complaints made about the business, as well as an A – F rating.

Average monthly US traffic (Alexa): 6.48 million
US ranking (Alexa): 1,002
Business reviews for: any business

Manta is an online small business service directory, search engine and review site that provides small businesses with the information to network. The site helps small businesses connect and grow through their community where users can buy from, partner with, and connect to companies.

Average monthly US traffic (Alexa): 5.44 million
US ranking (Alexa): 1,150
Business reviews for: service related businesses

Angie’s List is a service listing and review website that offers user-based rankings and reviews of service professionals in local areas. Because Angie’s List is a paid review site, it is known to be less filled with rambling reviews from customers and spam. Members grade companies using a report card scale from A-F on price, quality, responsiveness, punctuality, and professionalism. Angie’s List is divided by categories such as house, auto, health, pets and services.

Average monthly US traffic (Alexa): 3.67 million
US ranking (Alexa): 1,561
Business reviews for: any business, mostly restaurants

Foursquare is a local search and discovery service mobile app. The app helps users discover new places/businesses through other Foursquare business reviews. Users can let friends know where they are and find out where their friends are. In any case, with 55 million monthly active users, Foursquare is a powerful force to monitor customer loyalty and feedback.