The address bar can act as more than a standard search engine. By typing in special keywords, you can launch custom searches within pretty much any site you like, including Wikipedia, IMDb, Amazon, and more. To set this up, navigate to the site you want to search and find its search box. Right-click inside the box and choose Add a Keyword for this Search. A dialog box will pop up. Next, type something short but unusual in the keyword box. This is the term that will trigger your site-specific search when you type it in the Firefox address bar, so you don't want it to resemble any normal keywords you might search for on a regular basis. For example, you might choose to trigger an IMDb search with the term "imdb," because you're not likely to run a general search for that word. Click Save, and you can then search within that site by entering your keyword, followed by your search terms, in the address bar at the top of the browser. To stick with our previous example, type "imdb Tom Cruise" into the navigation bar to search the IMDb website for Tom Cruise.