User blog comment:Craiglpalmer/SOPA and PIPA Situation Summary/@comment-768817-20120118024750/@comment-4748914-20120118025659

The majority of the screen will be blacked out and an anti-censorship banner will be there.

But only for the first page you view, after that it will go away... ...For an hour.

Unless you meant wikipedia; they are blacking out entirely for 24 hours straight.