A quick UI fix would make HN readible on mobile devices. The fixed width of the page is caused by the navigation menu. If the navigation menu was made wrappable (white-space:auto) then the page would more easily fit right on almost any size screen. On mobile devices you can also eliminate unnecessary borders and padding. Very simple fixes like this would go a long way.
On Android, turn on "auto-fit pages" in settings. This isn't ideal, as there's still some left-to-right scrolling to focus on individual comments as comments become nested, and fixed width text doesn't wrap at all (which is thankfully relatively rare), but it's a vast improvement, as each comment fits horizontally.
(Let alone the fact that I'm busy enough with my own projects) There's no link anywhere on the site to the source code, or information about how to contribute.
