After a 24-hour blackout, Wikipedia has returned to full working order but declared: "We're not done yet," BBC reports.
The site had blocked its content for 24 hours in protest at proposed anti-piracy legislation in the U.S. The encyclopedia said the site had been viewed 162 million times, with eight million people following instructions to contact politicians.
The protest led to eight U.S. lawmakers withdrawing their support for the proposed bills. Two of the bill's co-sponsors, Marco Rubio from Florida and Roy Blunt from Missouri, are among those who have withdrawn their support after "legitimate concerns".
But backers of the legislation, led by the Motion Picture Association of America (MPAA), described the action as an "irresponsible" publicity "stunt".
The Stop Online Piracy Act (Sopa) and Protect Intellectual Property Act (Pipa) have caused considerable controversy among internet users and businesses since the plans were proposed in October last year.
The Jan 18 co-ordinated action was intended to raise the profile of the debate to those outside of the tight-knit technology community – an objective Wikipedia said had been met. "More than 162 million people saw our message asking if you could imagine a world without free knowledge," the site said.
Facebook founder Mark Zuckerberg deemed the occasion worthy enough to post his first tweet in almost three years. "Tell your congressmen you want them to be pro-internet," he wrote, linking to a longer statement on Facebook.
He continued: "We can't let poorly thought out laws get in the way of the internet's development. "Facebook opposes Sopa and Pipa, and we will continue to oppose any laws that will hurt the internet."
Google, which urged its U.S. visitors to sign a petition against the bills, said more than 4.5 million signatures had been gathered.