There's an incredibly useful extension that's not on that list that I bet a good number of HN folks would like:
Vimium [1]
It lets you use keyboard shortcuts to navigate through webpages, click buttons, jump to text boxes, etc. it's been huge for me both as a productivity tool (it's significantly faster than using a mouse for navigation) and also for reducing RSI/strain on my hands.
Here's a video of it in action as you really need to see it being used to understand the different interaction model it provides.
I used to use vimperator and/or pentadactyl back before the big firefox change that redid how the browser buttons/menus/etc were rendered and it was pretty ideal. The bar at the bottom, the ability to do bind any menu action, the quick addon management interface, the beautiful completion when opening a link.
Since eventually switching to Chrome, I've tried vimium every now and then and always found it lacking. It usually got in the way when I didn't want it to and I'd get sick of trying to figure out how to turn it off for a particular site/just for this one interaction and just uninstall it.
It's been a year probably, so I guess I'm about due for another go.
Ironically Vimium (and most extensions) are disabled on the Chrome Extensions domains. So when I hit 'yy' to copy the URL of the existing page it didn't copy it, so I instead pasted the last URL I had, which was the CPRA checklist.
Not something I had intended to do, but I hope the checklist was useful.
Vimium [1]
It lets you use keyboard shortcuts to navigate through webpages, click buttons, jump to text boxes, etc. it's been huge for me both as a productivity tool (it's significantly faster than using a mouse for navigation) and also for reducing RSI/strain on my hands.
Here's a video of it in action as you really need to see it being used to understand the different interaction model it provides.
https://youtu.be/t67Sn0RGK54?t=21
1 - https://chrome.google.com/webstore/detail/vimium/dbepggeogba...
edit: fixed link (but if you enjoyed the writeup of data security requirements let me know).