Last year, Amazon and book publisher Hachette engaged in a contentious feud that at times saw the online retailer use its considerable clout to make it difficult for consumers to purchase books by Hachette-published authors. Now, eight months after the two companies came to an undisclosed agreement, groups representing thousands of authors and booksellers are pointing to the online book retailer’s actions as reason for the Department of Justice to open an antitrust investigation into Amazon. [More]