Thank you for singing the praises of bookmark keywords, which are apparently a long-lost and forgotten feature to many people. I love all of mine, and it sounds like you've created a great library of your own. Good thing neither of us have to agree on what keywords to use.
I have a heavily customized userChrome.css - none of Firefox's Chrome UI is exposed to me. The only UI I see are the few context menu options I left and tab groups (if you can consider that FF UI)
It's a lot like Pressing F11 without the issues that arise when using Full Screen browsing.
!h searches Hoogle; I would prefer it to search Hacker News. To search Hacker News I have to use !hnsearch or !hn
!hn isn't much larger than !h but is still something I would prefer to set myself.
!m goes to Google Maps but I would prefer to use another map service. I could use !mapquest but would rather it just be !m
!sd goes to Slickdeals instead of Science Daily (which is !sciencedaily , talk about lengthy)
E:
I just compared my keywords and then searched the DDG Bang list for where I would be taken if I had used DDG instead of ones I set myself.
E:
>Plus I make ddg my default browser so I do just go to the address bar put `!yt cats` and get youtube cat videos.
I just type "y cats" and get youtube cat videos. ;)