Yelp 

Yelp Inc operates in the online content market based in the United States. It provides a web-based platform and mobile application to bridge the gap between businesses and consumers. The platform assists consumers through product reviews, tips, photos and videos thereby enabling them in making appropriate buying decisions and posting their feedbacks. Its products and services includes Advertising Products and Business Page Products. In addition, it also lets the buyers directly transact with businesses directly through its platform. Yelp generates revenue mainly from the sale of advertising on its website and mobile app to businesses. The company generates majority of the revenue from United States, and also has its presence in other countries.