In Epic Win for Anonymous he gives a fairly detailed history of 4chan and a survey of its uses. Stryker’s text is not heavy on analysis, cultural or otherwise, but it still helps a lot in forming an understanding of the phenomena of Anonymous, their origins in hacking and online trolling/flame wars, as well as predecessors to 4chan site that fostered the kind of transgressive (verging on nihilistic attitude) that appears to dominate. Epic Win for Anonymous is a descriptive history of 4chan, its origins, and the actual social movements that have emerged out of it.