Comment by clubm8

They can also do cool stuff like currency conversion:

https://duckduckgo.com/?q=10+cad+in+usd&atb=v123-2__&ia=curr...

And generate passphrases:

https://duckduckgo.com/?q=7+word+passphrase&atb=v123-2__&ia=...

My killer app is the bang commands: https://duckduckgo.com/bang

!hn for hacker news !a for amazon !w for wikipedia !imdb for imdb !reddit for reddit !wa is the best for calculations and other weird stuff (ex: type in a date and find out what day of the week it was)