> > If its a custom header to prevent their posts from being archived by
>
> > the HoF system, then that's not a viable option IMO.
>
> That's exactly what it is. Only once Google supports it, the question
> is whether it can still be called 'custom'.
>
I don't think that's an option here as every post to the lists will be archived
no matter what. Whats needed is a solution that will work for the list archives,
the mail/digests, the various mirror sites, etc. Masking an email address by
hiding the @ in some way is not perfect, but will stop most bots.