All PCs to be sold in China will have to include software that can filter "unhealthy information" from the Internet – and the government will keep them updated with lists of banned sites.

The New York Times reports that the new rules come into effect from 1 July, and all new PCs must be pre-installed with the so-called "Green Dam" software.
The move will make it increasingly difficult for China's 300-million Internet user to access uncensored news and information.
The Green Dam project is ostensibly to filter out pornography, however it could be modified to block any type of content.