Amazon is going to publish its first actual book: Tim Ferriss’s 4-Hour Chef. Gizmodo reports that Ferriss is the first writer to use Amazon rather than Amazon’s self-publishing platform, and will be putting out paper, e-book and audio versions of 4-Hour Chef with the sales giant. Book publishers are worried, and Amazon is poised to take over the market one Kindle marketing tactic at a time. Amazon’s press release quotes Ferriss as saying that choosing Amazon Publishing “was a question of what future of publishing I want to embrace.”