See updates through the day Thursday here. Google covered it logo with a black box and Wikipedia's English site went dark for the day as they and other sites protested the proposed Stop Online Piracy Act and PROTECT-IP Act. The anti-piracy bills are being pushed by media companies and just as vehemently opposed by Internet and tech firms. Not everyone in the tech world is on board with the protest, though. Twitter CEO Dick Costolo said the effort is "just silly. Closing a global business in reaction to single-issue national politics is foolish.” And, no surprise, MPAA Chairman Chris Dodd isn't happy.

Chris Dodd thinks that the Blackouts are “irresponsible” and that this is another “gimmick, albeit a dangerous one, designed to punish elected and administration officials who are working diligently to protect American jobs from foreign criminals.”

Reddit went dark for 12 hours. (Last month, you'll recall, Reddit led a boycott that convinced domain registrar GoDaddy to withdraw its support for the proposals.) Craigslist had also gone dark. Facebook's founder Mark Zuckerberg posted a status update with a link to Facebook's stance on the issue. And Flickr allowed users to black out photos to support the protests. You can see a larger list of sites participating in the protest here. If you want to see discussions--pro and con--about SOPA's impact, see this story from the BBC. The House Judiciary Committee isn't deterred. It plans to resume markup of the bill next month. However, TechCrunch reports that some members of Congress are backing away from their initial support. Updated at 3:10 to add report on Flickr