Firefox Custom Search Shortcuts
In addition to the built in search shortcuts in firefox, you can also add custom shortcuts in the settings.
This lets you override your default search engine by prepending a keyword in your address bar (like @google, @duckduckgo, @kagi). It's a quick shortcut if you want to search for something on a specific site. The wikipedia one (@wiki) is especially neat in that it'll take you straight to the wikipedia page if there's a direct hit, no results page you need to go through first.
