A lot of webcomics coordinated with each other and are posting a red-background "CONTENT BLOCKED BY SOPA/PIPA" with a more or less personalised message about ho

A lot of webcomics coordinated with each other and are posting a red-background "CONTENT BLOCKED BY SOPA/PIPA" with a more or less personalised message about how it affects them. E.g. http://www.shortpacked.com/ http://www.shortpacked.com/ http://www.somethingpositive.net/ http://www.somethingpositive.net/ http://www.questionablecontent.net/ http://www.questionablecontent.net/ http://www.girlswithslingshots.com/ http://www.girlswithslingshots.com/ http://www.unshelved.com/ http://www.unshelved.com/ http://notinventedhe.re/ http://notinventedhe.re/ XKCD is also protesting, though not coordinated with the above sites (and already listed in the OP)