Do you have idea what is "I'm feeling lucky" button in Google Search used for?

Google gravity - this is the effect of google gravity
Indonesia
January 26, 2011 9:12pm CST
Just type Google Gravity in search box and click I'm feeling lucky button, see what happen.... My friend told me about this, try also Google Hacker and Google Epic and then click I'm feeling lucky button, tell me if you know another keyword:)
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1 response
NerdyAwesomeSauce
@NerdyAwesomeSauce (109)
• United States
27 Jan 11
type in 2204355 and press i'm feeling lucky. That is all.