I discovered this one by accident. Well, I needed to refer to RFC 1939. So, I started Firefox to do a Google search. But, instead of typing “rfc 1939″ in the Google search bar of Firefox, I typed the same into Firefox’s address bar and pressed enter as below:

Much to my surprise, Firefox actually fetched the RFC document for me.

Then, I tested this by typing a few more random RFC numbers and it all worked. Awesome!! Pretty Awesome!!
Edit: Further probing by typing random words (e.g. “apple macbook”) into Firefox’s address bar and pressing enter has led me to believe that this is just the “I’m feeling lucky” feature of a Google search.
Edit: Confirmed that this definitely is a Google search after trying out other Google features such as Google calculator and advanced operators in Firefox’s address bar.
4 Comments
April 11, 2007 at 8:32 pm
..something that gets you stumped by leaving you with absolutely no clue on what just happened is definitely cool.
April 12, 2007 at 7:09 am
@bugTracker: No doubt about it.
April 14, 2007 at 6:27 am
hey i use this for my wiki searches .. ‘wiki foo’
April 14, 2007 at 11:20 am
Apart from such default search, I also have at lest 30 different custom searches in Opera. It helps a lot to save time. ‘foo bar’