Probably 70% (or more) of the chinese population live in rural communities, with little or no telephone or computer access, so put away those dreams of a porn empire in China.
Also, Censorship is notorious in China, particularly with regard to Porn and Free Speech. They recently closed 2000 cyber cafes:
http://www.newsfactor.com/perl/story/12170.html
Some groups are fighting to try to thwart the Chinese governments censorship actions, but it is not an easy fight:
http://www.business2.com/articles/ma...,35075,FF.html