Nice, but it disables DTrejo's keyboard navigation extension. Can you please add J-walking?
Help from the DTrejo's extension:
Current style of hotkeys: gmail style.
Key — Action
j — move down
k — move up
o — open / view comments
enter — same as above
r — reply to comment or post. Only works on article pages
w — upvote (win)
s — downvote
Sample Workflow
Hit news.ycombinator.com
hit 'j' a few times to get to the 3rd post
hit 'o' or 'enter' to view the comments
hit 'o' again to read the article
hit ctrl-w or cmd-w to close the tab
hit 'j' to scroll down the rest of the comments
hit 'r' to respond to someone who is wrong on the internet.