You don't get it. I know the new posts are shown in red.
The way I navigate is to use the next button which goes directly to the next new message I haven't read, so I can work my way through all the threads to catch up.
The point I'm making is the Endless Thread is always popping up when I do this.
I really can't see why there is such a resistance to making it a sticky. Anyone who wants to contribute would still be able to.