On Thursday, Twitter posted a new censorship policy, stating that it will now have the ability to “reactively withhold content from users in a specific country — while keeping it available in the rest of the world.”

The US Congress is considering America's first system for censoring the Internet.
Despite public outcry, the Internet Censorship bill could pass at any time.
If it does, the Internet and free speech will never be the same:

As Egypt moved Monday to shut down its sole operating Internet service provider, Google and Twitter teamed up to create a service for people to send tweets from the nation through a phone call.

A group of influential conservative members of the behemoth social media site Digg.com have just been caught red-handed in a widespread campaign of censorship, having multiple accounts, upvote padding, and deliberately trying to ban progressives. An undercover investigation has exposed this effort, which has been in action for more than one year.

Google CEO Eric Schmidt said his company opposes censorship in China and aims to apply pressure to improve the situation for the country's people.

4Chan is, for lack of a better term, the “Wild West” of the Internet. It is an unedited, unmoderated message board that is surprisingly influential on the Net. 4Chan users have been credited with starting lolcats and RickRolling. Last year, a 4Chan user allegedly hacked into Sarah Palin’s Yahoo Mail account and posted the password on 4Chan. The site, especially its /b/ page, is an interesting place — very, very “not safe for work.”