Huh?

To sort of take a stab in the dark about what you're wondering, when I talk about a BBS feature like a membership system, it's always optional and how it's used is up to the board operator. He/she can not use the membership system at all to set up a fully public board; or require registration to get in. It's up to Justin where HabitableZone is concerned. Just a potential...

Of course, in the case of the membership system, I'd argue that it will be benficial to everybody, not just moderators. One important thing it will do is shield your email address from spammer spiders, so you won't have to keep shifting around to various "free" Web mail accounts. (No more bounce notices lately from your current one, BTW. I'd say you're already quite aware of that hassle, eh?)

--Robert