Reddit announced that it will be blacking out its site for 12 hours on 01-18 from 8AM - 8PM EST.
The Reddit Team says in a blog post:
Instead of the normal glorious, user-curated chaos of reddit, we will be displaying a simple message about how the PIPA/SOPA legislation would shut down sites like reddit, link to resources to learn more, and suggest ways to take action. We will showcase the live video stream of the House hearing where Internet entrepreneurs and technical experts (including reddit co-founder Alexis “kn0thing” Ohanian) will be testifying. We will also spotlight community initiatives like meetups to visit Congressional offices, campaigns to contact companies supporting PIPA/SOPA, and other tactics.
We’re as addicted to reddit as the rest of you. Many of you stand with us against PIPA/SOPA, but we know support for a blackout isn’t unanimous. We're not taking this action lightly. We wouldn’t do this if we didn’t believe this legislation and the forces behind it were a serious threat to reddit and the Internet as we know it. Blacking out reddit is a hard choice, but we feel focusing on a day of action is the best way we can amplify the voice of the community.
We reported earlier on Ohanian's testimony. He will be joined by:
Stewart Baker Partner, Steptoe & Johnson LLP
Brad Burnham: Partner, Union Square Ventures
Daniel Kaminsky: Security Researcher and Fortune 500 Advisor
Mr. Michael Macleod-Ball: Chief of Staff/First Amendment Counsel, American Civil Liberties Union
Lanham Napier Chief Executive Officer, Rackspace Hosting
Dr. Leonard Napolitano: Director, Center for Computer Sciences & Information Technology Sandia National Laboratories
Wikipedia is also considering a blackout.