It's not a depth limit. Rather, mods noticed that many deep threads were flame wars, and implemented a short delay before you can post in deep threads. At lea

It's not a depth limit. Rather, mods noticed that many deep threads were flame wars, and implemented a short delay before you can post in deep threads. At least, that's my understanding. To see replies, click on "Threads" at the top of the page. I don't know if there is any standard way of getting an email notification.