What is a faucet?

A faucet is a site where you can earn free bitcoins in exchange for advertising exposure or for completing small tasks. Faucets are a way for newcomers to get the feeling of earning, moving and spending bitcoins for free, even if in small amounts, so that they can try the system and, hopefully, get more involved with it. Faucet users gain small quantities of satoshi, faucet owners may benefit from ad income if the faucet is successful.
Remember 1 Satoshi = 0.00000001 Bitcoin.