If only I had procrastinated, this would have been a better place to post my answer.
In regards to that newsletter...
I know this sounds silly, but there's nowhere on the site where you can sign up for the newsletter after you've registered. At registration was/is the only time the option becomes available. The good news is that we've been aware of the problem and the next version of the forum allows you to add/remove yourself from the newsletter. The bad news is that due to our schedule and one of our programmers leaving for another job, I'm not sure when we'll be able to do the upgrade. Worst case scenario puts it out until Jan 2004.
As a chance to promote other titles and sites...
Our sites using the upgrade are:
Bead&Button
http://www.beadandbutton.com/bnb/community/forum/
BeadStyle Magazine
http://www.beadstylemag.com/bds/community/forum/
Astronomy.com
http://www.astronomy.com/community/forum/
Trains.com
http://www.trains.com/community/forum/
I moved my response over to hear to keep the other on topic.
I know I could "simply" add in that box, but there are a lot of other little fixes that I've made based upon feedback from here. I would love to get them on here all at once.