It's supposed to take you to the first post in the thread that you haven't "read" yet. I'd assume that would always be the last post on the page considering if you're looking at a page it should assume you've read all the posts on that page. I guess I don't fully understand how that works either.I tried that and it doesn't.... in fact, having clicked on "Jump to new" I don't understand it's function, it seems to randomly deliver you somewhere down the middle of a thread...