Sohu provides a network of community-based, web 2.0 products to millions of Chinese users on a daily basis. Sohu corporate services consist of online brand advertising on its matrix of websites as well as bid listing and home page on its in-house developed search directory and engine. This matrix of Chinese language web properties and proprietary search engines, consists of the mass portal and online media destination sohu.com, interactive search engine sogou.com, the games information portal 17173.com, the real estate website focus.cn, developer and operator of online games www.changyou.com/en/ and online video website tv.sohu.com. It also provides multiple news and information service on mobile platforms, including Sohu News app and mobile news portal WAP.Sohu.com. Sohu's online game subsidiary, Changyou.com has a diverse portfolio of online games that includes Tian Long Ba Bu, a massively multiplayer online games in China, and DDTank and Wartune (also known as Shen Qu), which are two popular web games in China. Sohu.com was established in November 1995 and went public in July 2000.