Looks nice. The only thing I found is if you scroll up in the news list area it doesn't stop at today's news , it loops back to a couple days ago. Which is rather unintuitive.
If the reaction they get isn't what they expected they may well hold it against you.
If users are doing what they shouldn't do, it's your fault.
Why not? If I don't know I'm at the top, my only choice is to scroll up. You don't give any visual clues as to where I am vertically - it's impossible to tell if I'm at the most recent headline. If I want to go back to the very top, my only choice is to scroll up until I can't any more. Ideally if I'm already at the top and I scroll up and nothing happens, that tells me I'm at the very top of the window.
Assuming the user knows he's at the top and so then 'shouldn't scroll up' seems like a bad assumption.