[choathedolls]

Firefox is a little lacking in that department. Chromium based browsers on the other hand, anytime a search is used on a page, that gets added to the list in your browser's options.

For example, just used HN's search bar, and there it showed up in the options ready to customise keywords to my liking (if I wanted to change it).

Before anybody claims it's an additional step, it's not. DDG requires you to know what the keyword is before you use it, which is the same as having to use the search on the site before. So I guess I agree it's a killer feature if you exclusively use Firefox for the time being.

[ma2rten]

In chrome you also just start typing the name of the site, until it autocompletes and then hit tab.

For example if I want to want search wikipedia, I type "en.w" and hit tab.