Expulsion from the list may be necessary where reasonable attempts to curb offensive behavior fail. Being a part of this group is a privilege, not a right. The list manager, upon consulting with other list members, will use expulsion only as a last resort for people who seem unable to be civil even after a warning or explanation. Participation in this group implies acceptance of these guidelines. It is generally safer and less embarrassing to check the address on your outgoing mail before you send it.
Mistakes happen, however.
That is one reason why it is important not to write something you would regret having made public. Your comments or questions could make an important contribution to a discussion, particularly if it is a comment or question other lurkers wish someone would post. When referring to previous messages, please summarize relevant parts sufficiently to let readers know what you are responding to. If you quote from previous posts, please quote only those passages necessary to place your response in context. Quoting entire posts may waste scarce mailbox space, and it makes for tedious reading.