Good step forwards towards interaction. Some more things that could make it a killer:
* Graceful degradation for noscript; maybe do a simple CSS fallback option.
* The page-slide animation is eye-candy but IMHO with time it might get annoying, make it optional.
* It shouldn't be hard to add an X on top-right corner of boxes to remove or shade things you read already.
* Some killer fonts, it's the New York Times!