Andrew Albanese writes: “The law firm that successfully sued Apple and five major publishers for colluding to fix ebook prices in 2011 has now filed a class action suit against Amazon, accusing the company of colluding with the Big Five publishers to restrain price competition in the ebook market. The suit, filed in the Southern District of New York on January 14 by Seattle-based firm Hagens Berman, comes a day after a Wall Street Journal article disclosed that Amazon was under investigation in Connecticut for potentially anti-competitive behavior in the ebook market.”