Walt, the short answer is, "It beats the hell out of me." I never did see what was so awful about the Netscape forum system, but a hell of a lot of people did, so as noted in my long nosebleed in another thread, I said, "OK, gang, you want it, you've got it."
Seriously? This forum is much, much faster. It's much less ornamented, and by my decision it will carry no advertising at all. The messages lists show both the author of the most recent reply and the name of the original poster, and that was a HUGE deal-breaker on the old forum for a lot of people. There's no difficulty in choosing a login name, and the system makes it a whale of a lot easier to log in (and, if you wish, to stay logged in).
I'm sure there are other points, but that's a big one that occurs to me.
How about it, folks? Tell Walt what else you prefer about this forum.