No. 3 review site: Amazon

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.

No. 4 review site: Yelp

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.