On January 18, 2012
Several sites (including reddit, Wikipedia, Mozilla, Failblog and the rest of the Cheezburger Network, and BoingBoing) are blacking out tomorrow. I will be off social media.
SOPA blockout countdown clock (with link to "Stop SOPA, The Essentials Summary And Bill Text" via @YourAnonNews and video "A call to action for webmasters around the world"
"The day the internet fought back: Anonymous, SOPA & the Battle for Free Speech" (some language NSFW)
"SOPA Blackout Set For January 18th: Here’s All The Info" (WebProNews)