What you do is:
Subject: HOTT.BOB subscribe
(Body of the message is unimportant, but make it entertaining, because I have to read it.)
This will get you added to the list, which is frequently chock full of useful information about HOTT.BOB developments. The list will become more and more useful as the date approaches. Then, as the event washes over us, its usefulness will dimish to virtually nothing, and it will be cast aside for more entertaining diversions. *sniff sniff*
Eventually, I will probably make a nifty form here that will make it simple for one to send subscription mail, but for now, suffer.