Ok, first I really like the new mobile site.
I prefer to read posts from oldest (on top) to newest (on bottom). I do this, because as I'm scrolling down, I'm also refreshing my memory of the thread. The problem is that when I'm done, I have to scroll all the way back to the top to find the up button. On a large screen this isn't a problem, as there's a scroll bar, but on small devices it can take a dozen swipes to get back to the top.
Thanks
jason