I don't want to sound like a jerk, but there are a few things you might want to consider fixing:

- The jarring placement of the YCombinator image, throwing out the alignment and flow of the page.

- The over-sized numbers for each item.

- The excessively big header "Hacker News", and what appears to be a strange effect in the screenshot.

- Lack of a fallback font for Helvetica Neue (Helvetica, Arial, sans-serif).

- The centred nav items along the top bar are awkward.

- The tiny up and down vote buttons are what people struggle with the most in terms of mis-clicks, maybe these could do with some attention.

- A slight gap between each article so the "slab of text" effect isn't so strong.