Our sister site apparently is:

Overcoming Bias will resume normal service on Jan 18 8:00pm (Eastern Time).

Today Overcoming Bias joins Wikipedia and many other sites in protesting proposed legislation — the Stop Online Piracy Act (SOPA) in the U.S. House of Representatives, and the PROTECTIP Act (PIPA) in the U.S. Senate.

If passed, SOPA and PIPA will give the US Justice Department and courts tremendous power to shut down entire sites. These bills endanger free speech both in the United States and abroad, potentially setting a frightening precedent of Internet censorship for the world.

You can find out more about the impact of SOPA and PIPA from the Electronic Frontier Foundation.

Interesting, my model of Robin Hanson had him say something about the blackout and how it shows people are hypocrites. Though obviously he has strong opinions on intellectual property. I think it would have been a good idea to Blackout LessWrong today. It would have given us a status boost in most of the communities we frequent.