Sohu.com Inc. (Sohu) is an online media, search and game service company providing online products and services on personal computers (PCs) and mobile devices. The Company operates through four segments: brand advertising segment and the others segment (both operated by Sohu), the Sogou segment and the Changyou segment. Sohu's main 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. Sohu engages in the others business, which includes mobile-related services and mobile products. Sogou is an online search, client software and mobile Internet product provider. Changyou is an online game developer and operator as measured by its MMOG Tian Long Ba Bu (TLBB) and its mobile game TLBB three-dimensional, and engages in the development, operation and licensing of online games for PCs and mobile devices.