From this page, it looks like all it takes is $$$ and meeting the (shockingly minor) qualifications. Heck, I could print up Church Bulletins and meet those membership qualifications, and for the Princely Sum of $195.00 (miminum) per annum, I could call myself a member.bloemmarc said:Sorry about the misprint on the title on top.
Anyways, I have not found their name wiyth the publishers association anywhere.