Engineers working on the censorship sampled search queries from 265.com, a Chinese-language web directory service owned by Google.
Unlike Google.com and other Google services, such as YouTube, 265.com is not blocked in China by the country's so-called Great Firewall, which restricts access to websites deemed undesirable by the ruling Communist Party regime.
265.com was founded in 2003 by Cai Wensheng, a Chinese entrepreneur known as the "the godfather of Chinese webmasters." In 2008, Google acquired the website, which it now operates as a subsidiary. Records show that 265.com is hosted on Google servers, but its physical address is listed under the name of the "Beijing Guxiang Information and Technology Co.," which is based out of an office building in northwest Beijing's Haidian district.