I am sure everyone is aware of !bangs, a feature DuckDuckGo initially introduced, now many new search engines in the market such as Neeva, You.com and etc have implemented bangs and have supported this very useful as well as time saving feature. I do not really want to go more in detail with bangs, because I am sure all of us, at some point, have tried DuckDuckGo, and nowadays, it has been kind of a must for me, at least in my primary search engine.
For those who have no idea what I am talking about right now.