> do. The delay wouldn't be that great and one site could act as a filter more
> a great many lists. It will eventually come to something of that ilk. It
> will have to.
I doubt it. I'm actually not that concerned about SPAM and mailing
lists, at least, not for my lists. It's easy enough to make the lists
such that subscribers only are permitted posting privileges. Only
those lists where the owner doesn't consider that an appropriate
option are really at risk for spam.
Now, it may come to pass that we'll see spam preceeded by mass
subscription to enable posting privileges, but if it does, I'll just
implement an appropriate posting delay for new subscriptions (dead
easy with SmartList and similarly so with majordomo assuming one has
access to appropriate files and cron).
I also divert all messages longer than 3KB for review before posting
(nearly all legitimate message to my list are short -- I hand approve
the longer ones). This limit is very good for catching urban legend
posts (though my list info has a rather strident warning to
subscribers not to post such things -- and, indeed, it's been many
many months since someone has tried).
The mailing list software available now is very powerful; I think
handling spam is one of the easier tasks in running a list these days
and it's only getting better. Unlike newsgroup software, mailing list
software is more advanced than the spammers. It's been a long time
since spam has made it to my list. My list (still predominantly
unmoderated) is much less noisy now at 2500+ subscribers than it was
in the early days of a few hundred.