Hiding an email address on a mailing list? + Notifications.

I notice that on the cygwin mailing list, emails appear like 

username <at> blah <dot> com

I guess a spider could interpret that. It'd be good to hide it.

Is there any option in sourceware?

I haven't tried it but i've seen some option with a mailman mailing list to hide email address though I don't
know if it does.  Is there any option like it with sourceware.. are they equivalent in this respect?

I used to have an email account dedicated to mailing lists, with folders for each program whose mailing list
I subscribed to, spam there if I got it wasn't a big deal, and when I didn't use it for some months, it got
deactivated, which was maddening..  I know my main address won't get deactivated, as I check it often,
though getting lots of notifications for those emails is irritating and yahoo instant messenger
notifies me with new emails. A great feature but not when it notifies me each time a new post appears on a
mailing list.

Also, I suppose i'll find out but is this  <at> cygwin.com or  <at> sourceware.