Google has primarily been blocked in China since 2009, when it refused to block videos of Tibetans being beat up during riots that occurred that year, and was accused of linking to porn. Yet, Google's arch-nemesis, Yahoo!, has decided to capitalize on Google's blockage and operate under China's guidelines to keep its share of users. Reporters Without Borders, a non-profit that defends journalists, accused Yahoo! of giving information to Chinese authorities that helped jail reporter Shi Tao for divulging state secrets in 2005. The non-profit said Yahoo! acted as a "police informant," to keep its relationship with the government and keep its business intact.