Censorship: OK to fight copyright infringement but not sex abuse?

Internet censorship is once again in the news after a federal judge posited a proposed Washington law aiming to prevent child prostitution is likely unconstitutional under the Communications Decency Act. A bigger question is why free speech still reigns online except when copyright is involved.

Is Twitter a newspaper, or is it the phone company?

Is Twitter a publisher of information like a newspaper, or a dumb pipe like a telephone network? A case in Australia — in which a man is suing over a defamatory tweet — highlights the difficulties Twitter could have as it tries to expand globally.