The problem that I've encountered is that you have two choices for email notifications - never get notified if a thread is updated or get notified every single time it is updated. It would be nice to have the option we used to have, where we got notified only the first time it was updated after our viewing. The new notification does tell you who commented on the thread (nice to know) and gives a little bit of their comment. But I think the old way was far superior. Maybe that's a possibility for later enhancement?