I was bored so I made gmail-style hotkeys for Hacker News. You can install the chrome extension here.
I thought I'd add support for Vim and Emacs style hotkeys, but then I didn't.
Hope you like the chrome extension. If you are concerned about privacy, it *only* runs on http://news.ycombinator.com/*
Have a great day,
(DTrejo on HN)
PS Here's the source if you fancy seeing it: http://github.com/DTrejo/HN-Hotkeys Most of the action goes on in hnkeys.js