Science and Technology

According to the Wikipedia Internet censorship is control or suppression of the publication or access to online information.
The legal issues are similar to offline censorship. One difference is that national borders are more permeable online:

inhabitants of a country prohibits certain information to be hosted on websites outside of the country. A government attempt in May to prevent its citizens to see these students, even if you have no control over the sites themselves. Countries that this kind of censorship in Burma, China, Cuba, Egypt, Iran, North Korea, Saudi Arabia, Syria, Tunisia, Turkmenistan, Uzbekistan, Vietnam to pursue.
More recently, in July 2009, the social network Facebook was banned in China. After the micro-blogging service Twitter and inaccessible in those days, Facebook seems to be moving to the latest victim of China in the context of recent incidents in the province of North-West. The recent bans and the freezing of Twitter, Facebook, YouTube, and even hickups products with Google and MSN are very painful for companies and people working in China. Back blocks west of Web 2.0 services, which had been banned in China, sometimes for only a short time, but this time we will be in fear of this block of time.
How to access and unblock Facebook, YouTube, Twitter and other Web sites in China can be blocked:
The only safe way to anonymously access blocked sites such as Facebook, YouTube, Twitter and many other professionals through a VPN with Internet browsing. We still hope that PPTP will be totally disabled before available again and only after each company to save it. Through the connection to the new world is the only way – forward!