!bang commands preform your searches directly on other search engines. Sometimes you know you want to go directly to another site to search, and these commands save you steps in doing so.
For example, suppose you wanted to search Amazon.com for 'bags'. In that case, you could just enter '!a bags' into DuckDuckGo and we'll take you right to the correct search results page on Amazon.com.
For more information and the full categorized list of !bang commands (over a thousand), check out our !bang page.