Yes, I do know why Amazon has done it, all the sock puppets rolling around those review sections.

FORBES: Amazon Bans Authors From Writing Reviews

The warning came as civil servants at the DfE began a rolling programme of industrial action over the cuts announced in the Department for Education Review last November.

BBC: DfE warned over potential unfair dismissals claims

After the review is completed it is hoped a pilot scheme will be run with a view to rolling it out across the country to other LEPs.

BBC: Lord Heseltine