[3][4] Sohu and its subsidiaries offer advertising, a search engine (Sogou.com), on-line multiplayer gaming (ChangYou.com) and other services.

after meeting its cofounder, Jerry Yang; the name was soon after changed to Sohu to differentiate it from the American company.

[11][12] On April 6, 2007, Sohu made a request that Google stop providing its Google Pinyin Input Method Editor software for download because portions of Sohu's IME software, Sogou Pinyin, were allegedly copied in order to construct it.

"[15] In November 2005, Sohu was selected to be the Official Internet Content Service Sponsor of the Beijing 2008 Olympic Games.

Sohu was provided exclusive services to construct, operate and host the official Beijing Olympics website.