Hey there, thats a good question and, one that i dont think many webmasters are aware of.

Throughout the world there are several countries that block access to pornographic websites and, China specifically has just started to take a more 'pro-active' approach to blocking internet access of porn sites.

For more information on countries that actively block porn sites, INCLUDING the United States, you might want to take a look at this article i wrote a year or so ago on the subject..

http://forums.gaywidewebmasters.com/...ead.php?t=1910

Regards,

Lee