The new site (www.amecorg.com) says:
Following a series of strategic planning meetings over the past year members have agreed to re-name AMEC, the international trade body and professional association for media research and evaluation.
The name and corporate re-branding as The Association for Measurement and Evaluation of Communication reinforces the body’s new strategy to expand its membership and services to meet the needs of all organisations and individuals across the globe that are involved in the provision of media evaluation and all kinds of communication research.
Membership is now open to include "PR companies that offer bespoke measurement and evaluation systems and media monitoring companies that offer media evaluation as part of a wider range of services. Individual members will range from students to executives working in the industry for several years."
I might re-join.