Sohu's (Nasdaq: SOHU) released a new value-added service called "Sogou 800" with voice call function for its search engine Sogou on March 13, reports Beijing Times. A new "call" button will appear on Sogou's company search result pages, and users can click on the button to make phone calls directly from their computers to the companies' front desks. Sogou will incur all the calling costs, and each call is limited to 10 minutes. Users are required to fill in their contact numbers prior to making the free calls.