From Boston Review, "the day Wikipedia went dark": Edward Lee remembers the January 18, 2012, online protests against the Stop Online Piracy Act (SOPA) and whether they saved the free and open Internet once and for all. The new monopolies: Have America's big Internet companies become too powerful? Google has revolutionised the way we holiday, shop, work and play; now, with Knowledge Graph, it plans to radically transform the way we search the internet — again. Wikipedia's Sandbox is a place for folks to test their editing skills before making real changes to the site, and now there's a Tumblr that captures all their weird, experimental edits. These are the unwritten rules of Facebook. John Semley is against Tumblr: The microblogging site now rivals Facebook and Twitter in reach and influence, but it represents everything wrong with the online echo chamber. Did an 11-year-old really create his own social network? The science of why comment trolls suck: Chris Mooney on how the online peanut gallery can get you so riled up that your ability to reason goes out the window. Even a rocker can be bullied: Amanda Palmer's blog post seeks advice on dealing with the trolls — and some moving answers flood in. Luke McKinney on the 5 types of sociopath invented by the Internet.