It is totally FREE and you can remove yourself from the list any time you wish. The reasons for this is that the existing list server provided by the website host had very limited functionality.
Groups list server offers significant improvements to the services available to list subscribers.
In addition, a chat room is available, an area for members to post files and photos, as well as lots of other snazzy facilities. If you wish to access archived messages from the old list, please contact the AERA Webmaster . Send the command messages from your emailer program. You should be able to access the commands simply by clicking on the orange links. This should launch your email program.