http://www.alternet.org/civil-liberties/how-powerful-intelligence-world-verge-ability-make-people-digitally-disappear

"Great Britain, however, will soon take a significant step toward deciding what a private citizen can see on the web even while at home. Before the end of the year, almost all Internet users there will be “opted-in” to a system designed to filter out pornography. By default, the controls will also block access to "violent material," "extremist and terrorist related content," "anorexia and eating disorder websites," and "suicide related websites." In addition, the new settings will censor sites mentioning alcohol or smoking. The filter will also block "esoteric material," though a UK-based rights group says the government has yet to make clear what that category will include."