 Suggestions were made to follow a voluntary system backed up by an official recognition of compliance to facilitate the adoption of the Guidelines.This would encourage like-minded supporters within an organisation to informally use the Guidelines and then gain the official “stamp of approval” to show that they are really following them.Actually, other organizations policies take a voluntary approach in the documents they recommend, such as the Association of Learned and Professional Society Publishers (ALPSP) with more than 230 not-for-profit publishers.