Individuals without the funds to pay yearly 4-H dues are usually given a
rider. And anyone is allowed and invited to write to the letters column of
Scientific American. They don't limit the discussion to sub'ed members.
I run several mailing lists for the user groups/professional orgs I am
involved with. If done properly, it takes almost no effort after the
initial setup/tweaking.
|    Jeffrey Fabijanic      |   TooMuchCoffeeMan says:
| Designer, Tinkerer, Cook  |
| Roof Gardener, Homebrewer |   "The only redeemable
|      (617) 983-3056       |     coupon in Life is -
| 38 Spring Park Ave, JP MA |          ACTION!