When/if you do broadcast to all 800+ lists' owners, please make sure you
tell them who you are, why you are sending the message, why they are
receiving the message including the fact that they are listed as an owner
on one or more lists, where they can go for additional information, and
perhaps as important, NOT to respond back to the 800+ lists' owners
asking for additional information or why they are getting the message !

/Pete Weiss at Penn State