Devlin Barrett reports in the WSJ:

The Federal Bureau of Investigation shut down Thursday one of the world's most popular file-sharing websites, MegaUpload.com, and announced the arrest of four of the people behind it in a global crackdown against the suspected online pirates.

The FBI's move pushed the raging piracy debate to new territory: the role of online 'lockers' where users around the world store and share material, often times pirated movies and music. The raid came a day after Washington lawmakers were besieged by complaints about legislation designed to crack down on offshore file-sharing services. Internet sites like Wikipedia and Google Inc. protested the legislation as censorship.

A copy of the indictment is linked to the story.