> Exactly. As in when your people add the new user, your billing table has > an expiry date. Every week/month/whatever, a cron script runs which spits > out a list of users to be deleted, and that list is handed off to a cron > script running on the mail system which vdeluser's each one.
I should add that how I described it is _exactly_ how we implement it. (mid-size ISP, around 15k-users) Regards, Andrew