Take a look at http://goodstuff.prodigy.com/Lists/
We have built a Web/Majordomo gateway that works with a generic mailto script. The commands go in a hidden variable called "body", and we use the listname-request address so that the list may be selected from a drop-down box.
Prodigy Services Company
> Are there any web tools that would allow users to subscribe, etc. to
> majordomo lists without actually sending e-mail messages all over the
> Shane P. McCarron Inet: firstname.lastname@example.org
> Project Manager, The MACS, Inc. Phone: +1 612 434-4431