Nobody uses the I'm feeling luck button. I remember Marissa Mayer saying so and here are some links http://www.google.com/search?hl=pt-BR&safe=off&clien...

I find it very useful to use as a search destination for the address bar.

For example, in Chrome, add this as one of the Search Engines in the options dialog: http://www.google.com/search?q=%s&btnI=Im+Feeling+Lucky

I've associated that with the keyword "gg"

Now, when I go to the address bar and type a query whose first Google result I am confident will be the destination I want, I've got a great way to get there.

Example:

"gg imdb Forest Gump"

Will get me to IMDB's Forest Gump page. So you can pretty much imagine the power here, especially for reference sites. Type the site name and the query, and you'll end up where you want to be.

I don't think so, didn't google publish that they "lose" 60 million USD or something beaues people click it and don't see ads :)

Google is replacing the need for the "I'm feeling lucky" button with their auto-complete system. It's the same effect as the button but is shown in the auto-complete field while the user is typing.

This has the same side effect for Google regarding ads as does the button. Although if a user wants to be taken directly to website ABC they prob aren't a good audience for ads.

Nope. Unless, of course, you're googling "Do you feel lucky, punk?".

http://www.google.com/search?hl=en&site=&q=do+you+fe...

The one that appears after you start typing?

and saves a lot of money for Google too