Is freebitco.in legit site? Is freebitco.in a legit site? This is faucet.  What is the use of faucets in bitcoin. Is it also a mining business?Please tell me more about faucets.
concerning the mentioned website i advise you to read this extended discussion about : https://bitcointalk.org/index.php?topic=341659.0

concerning the faucets systems


  Bitcoin faucets are a reward system, in the form of a website or app,
  that dispenses rewards in the form of a satoshi, which is a hundredth
  of a millionth BTC, for visitors to claim in exchange for completing a
  captcha or task as described by the website.  


purpose :


To introduce users to bitcoin
To get traffic
To make money


Besides, in the testnet the faucets are worthless bitcoins distributed for test purposes.