[Luuucas]

nice example for living the command line idea: https://addons.mozilla.org/en-US/firefox/addon/instantfox/

[danohuiginn]

I prefer http://yubnub.org/. Yubnub also calls itself 'a command line for the web', but manages that without requiring an add-on

[burgerbrain]

You can do that yourself what whatever site you wish by right-clicking on the search bar on any site an selecting "add keyword for this item".