Control the xkcd.com comic stream from your keyboard.
It's on the Chrome Web Store here.
- Left Arrow -> Go back one comic
- Right Arrow -> Go forward one comic
- ? (Question Mark) -> Go to a random comic
- < (Less-than Sign) -> Go to comic #1
-
(Greater-than Sign) -> Go to the most recent comic
- " " (Space) -> Show or hide the current comic's alt-text
That's it. It doesn't do anything else.