Rocio Concha, Which? Director of Policy and Advocacy, said: "It is positive that Amazon has taken legal action against some of the fake review brokers operating on Facebook, a problem Which?'s investigations have repeatedly exposed. However, it raises big question marks about the proactive action Facebook is taking to crack down on fake review agents and protect consumers. "Facebook needs to explain why this activity appears to be rife, and the Competition and Markets Authority must challenge the company to provide evidence to show that the action it is taking is effective. Otherwise, it should consider stronger action against the platform. "The government has announced that it plans to give the CMA stronger powers to protect consumers from an avalanche of fake reviews. These digital markets, competition and consumer reforms must be made into law as a priority." -ENDS-