>Of all the presented solutions thus far, I like the idea where listserv
>let's you know when your subscription is up. That way, I will know what
>server to re-subscribe to - considering I can't remember where I work
>sometimes. It would also be nice if this was applied only to the PUBLIC
>lists and allow for an eternal option or an option that will allow for
>a longer time-period that what the default might be.
 
I like this as stated. A listowner command to set an expiration for
some particular subscriber would cover the exceptions.