Mailing list using procmail?

        I am sure you have all heard this.. But I would like to write a
simple mailing list using procmail. I would list to be able to have people
subscribe to the list and also remove themselves from it. I know the basics
of procmail.. I am having problems with doing the names thing. Do I just add
them to a file using cat? How about removing them?

Thanks in advance,
Justin

Justin Rains
http://www.nku.edu/~rains/

[L]inux has an installed base conservatively estimated at around 3
million users.... [V]endors say that most of the top companies in the US have
bought the OS - but that few will readily admit to running their
multimillion-dollar corporations on code put together by a band of software
idealists. --
        _Wired_