I think these all should be non-controversial. Let me know if I'm
mistaken.
1. The overall amount of mail sent through discussion lists is small
relative to direct (person-to-person) mail or to broadcast (one-to-many)
mail.
2. Lists do a good enough job of managing the mail that they forward that
recipients generally do not worry about spam filtering mail from lists to
which they've subscribed. (Bozo filtering of legit but stupid messages
doesn't count as spam filtering.)
3. The most common way for spam to get into a list in recent years is for
a subscriber's account to be stolen by a spammer who sends spam to
addresses in the account's address book.
R's,
John
PS: I'm attempting to describe the way lists work now, not the way they
might work at a hypothetical future time.
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