Again, we have instructions which can be sent out to the list's owner when a listserv is purchased. It is not necessary for the list owner to be an Xcalibur client - only that you have a fixed email address which you provide to us. It's not technically necessary, but we would prefer it. You see where it runs off the page. Keep it short and neat.
Most places use a one-word summary of the list's name.
In lieu of that, could the signature be excluded so that it could simply be included as an integral part of the outgoing email message. Yes, it could be excluded and included as part of the outgoing email message. In fact, your personal signature will also be sent on the email messages unless you take it out. So, most of the time you get your personal signature followed by the list signature. If you don't want a standard list signature, we'll leave it blank.