Almost all new cool extensions are now created only for Chrome. The last similar thing I saw was: https://github.com/gabrielecirulli/hn-special This makes me seriously question why I'm sticking with my Firefox nightly.

Will there be a Firefox port? or are you using some Chrome specific APIs?

I don't know if this is the experience other people are having, but it's super buggy for me. When I view comment threads (like, this page for example), the layout of the page gets hijacked and looks really weird. Also, when typing out a new reply comment, trying to type certain letters would register as command shortcuts instead of simply entering text.

Thanks for reporting the bugs, I'll fix them.

This looks like a fantastic tool. Unfortunately I use firefox. That being said, I use similar extensions for other sites including RES for reddit. I will definitely use it if/when there is a firefox extension.

User configurable "hotkeys" would be cool as well so that the user could configure specific keys for navigation.

I dig it! Perhaps update this by adding a shortcut for the new "Show HN" nav link?

Thanks for the suggestion, I've opened an issue on GitHub for it.

I would love to have vim mode.

totally agree: vim mode is a must.