o.o it's intuitive imo. !g - google, !yf - yahoo finance, !cb - crunchbase, !news - google news, !yt - youtube. Sometimes I just try an abbreviation that makes sense and lo I'm correct.
Plus I make ddg my default browser so I do just go to the address bar put `!yt cats` and get youtube cat videos.
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.
Plus I make ddg my default browser so I do just go to the address bar put `!yt cats` and get youtube cat videos.