As of 12 a.m. ET Thursday — after 24 hours of darkness — Wikipedia is back online.<p>According to the site, 162 million web users saw its protest against the U.S. Stop Online Piracy Act (SOPA) and the Protect IP Act (PIPA).<p>“You said no,” the company said on its thank you page. “You shut down Congress’s switchboards. You melted their servers. Your voice was loud and strong. Millions of people have spoken in defense of a free and open Internet.