"A report released today by the OpenNet Initiative (ONI) concludes that the scale, the scope, and the sophistication of state-based Internet filtering have all increased dramatically in recent years," according to the MIT Technology Review.
According to the report, China, Iran, and Saudi Arabia remain the top blockers. Each nation filters not just pornography, but also a wide range of political, human-rights, religious, and cultural sites deemed subversive by those countries' governments.
Other countries are more selective in what they let citizens see or not see. Syria and Tunisia, for example, filter a great deal of political content, while Burma and Pakistan target websites that pertain to national-security issues.
Just as legal asymmetry between Western and totalitarian countries allows the latter cultures to subvert the former through "civil rights" while prohibiting similar activity within their own borders, they may eventually use the Internet to disseminate their preferred message while blocking dissenting messages. Just as churches are prohibited in Saudi Arabia while mosques are protected in the West, the Jihad may eventually be broadcast from certain countries and their reception in the West guaranteed as a "right" while anyone who mounts a reply will not only be blocked, but charged with "hate speech". Don't think it can happen? Well the censorship part is apparently happening already