I'll second the comments on the Banewarrens forum. I would be having a much tougher time there without the ability to "borrow" all sorts of great tips from my fellow DMs (and thanks for the kind words about my own story hour there!).
My players are an unusual group -- there are only two of them, one a longtime RPG vetertan, the other a relative newbie to the game. Let's just say that without the veteran around to make tactical suggestions, I think the characters wouldn't have made it as far as they've come. If you're playing with newbie players, you should make some decisions on how to handle PC deaths and talk it over with them first, as it will come up

.
I find it interesting that folks say to make sure you allow your PCs time to make items and such. My own PCs have had very little downtime, because the adventure is written in such a way to keep the PCs on their toes (unless the PCs prevent it somehow, the other groups are making progress while the PCs rest, give or take a few choke points). Having given the players this feeling of intense drive, it would be tough to ease it up without it seeming obviously contrived.
My players are having fun, but because it's taking us so long in real-life time to get through it (having taken a couple breaks for extended times away from the game, etc), it's starting to feel like it's never going to end. I guess that would be an issue with any epic mega-adventure, though.