Sohu.com Inc. (Sohu) is an online media, search and game service company, which is engaged in providing online products and services on personal computers (PCs) and mobile devices in the People's Republic of China (the PRC). The Company operates through three segments: the Sohu segment; the Sogou segment, and the Changyou segment. The Sohu segment's business is the brand advertising business, which offers to users, over its matrices of Chinese language online media, various content, products and services across multiple Internet-enabled devices, such as PCs, mobile phones and tablets. The search and search-related business primarily offers advertisers pay-for-click services, as well as online marketing services on Web directories operated by Sogou. Changyou's business lines consist of the online game business; the platform channel business, which consists primarily of online advertising and also includes Internet value-added services (IVAS), and the cinema advertising business.