Eh DOC,
I can see the value of such a list to have an index of name to member number for searches. My only concern is if the email addresses get picked up by a web crawler and added to a spam list. Maybe I'm just paranoid. So far, I've been fortunate with my work address to be relatively free of spam (knock on wood). Not sure if there is some form of spam filter or what. My home email is not so lucky. I have so many message rules that unless I know the sender, the email doesn't get through.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.