Bradley Metrock, writing on the Digital Book World blog:
It is our absolute privilege to ban all Macmillan employees from attending or speaking at Digital Book World until the company's library embargo is lifted and they fully comply with the requests of the American Library Association. This ban goes into effect immediately for all of Macmillan's many imprints and subsidiaries, as well as for employees of the parent company, Holtzbrinck Publishing Group.