imo, if you want to suscribe to a mailing list, you have to be prepared to take the load of emails with it :-) And with something like Cobalt, its only gonna increase.
And as long as everyone is giving you hard time :)PLEASE use a better subject line than PLEASE, that tells me nothing about what you are looking to PLEASE. How about:
Subject: PLEASE no SPAM on this list (not really getting on you, just PLEASE take this advice) J.A.L.E.