See, Majordomo is the name of a program which automates most of the functions of a mailing list. The guy who maintains the list, the admin, runs the list to provide information to the people on it. For instance, I'm on a boa constrictor info list. But you meet lots of interesting people. Anyway, a list can be open or closed.
Open lists mean anyone can join, closed list members have to be approved by the admin.
I'm sure this BPR list will be closed. He's a pig. A long column of messages appeared, several of which were addressed to majordomo . Yinyang yipped anxiously. See, most interaction with Majordomo, even for the admin, is done by e-mail commands.