This is the way that the ThinkTank has been since the beginning in September 2006 but perhaps more conversation is needed about this if people are uneasy about that. There are few options as far as I can tell though, it seems that MailMan only allows public or private archives and the public archives (although generally underused as far as I can tell) are a great resource.

Thoughts? Anyone more of an expert on MailMan and knows a better way we should set it up?