Tip for non-English speakers
!wen for English wikipedia if your default language is something else.
More specifically, typing "!imdb matt damon" will simply forward you to the following link: https://www.imdb.com/find?s=all&q=matt%20damon
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More examples:
!a soap => https://www.amazon.com/s/?url=search-alias%3Daps&field-keywo...
!hn duckduckgo => https://hn.algolia.com/?query=duckduckgo&type=story&dateRang...
In Safari, typing "imdb matt damon" and hitting the down arrow before enter gives me the same result. Do other browsers not have site search built-in? It will also pick up search fields on any site you browse you instead of requiring it to be added to some central repository.
And I use Spotlight for calculator and unit/currency conversions. Seems wasteful to roundtrip that kind of stuff online.
Also, when your search didn't give you what you were looking for, you can just prepend e.g. !g to search on Google, which for me is slightly faster than to copy the query, go to the address bar, enter "g" and then paste.
