Sex

Sex is the third most searched word on online search engines, after "and" and "the." So next time you're searching for "the meaning of life," remember, you're only one word away from the answer.

Wait... no...

This shouldn't be all that surprising if you can believe that by 2006 20% of all websites were dedicated to porn, a percentage that only continues to climb.

Source: The Penguin State of the World Atlas, seventh edition