Good idea!
I wonder if it is doable though...

>>> Ted Ashton <[log in to unmask]>
08/01/97 03:12pm >>>
Jeff,
  I was just wondering if it would be a reasonable idea to
not allow folks who
aren't members of the list to post to it.  It should solve the
spam problem, at
the cost of turning all the usenet folks into lurkers.  They
would probably
prefer that to being completely cut off.  Anyone else with
comments on the
subject?

Ted