every 30 mins :
http://www.faucetbtc.com
http://www.canhasbitcoin.com
http://www.rawbitcoins.com/
http://www.btc4you.com
http://www.thebitcoin.me 
http://www.srbitcoin.com
 http://www.btcmine.net
 http://www.fr33bitcoins.com
 http://www.freebitcoins4u.com
 http://www.bitcoins4free.me
 http://www.bitcoinspain.net
 http://www.bitcats.net
 http://www.freebitcoins.me
 http://www.thefreebitcoins.com 
http://www.virtualfaucet.com
http://www.freebtc4all.com 
http://www.elbitcoingratis.es 
http://www.nioctiB.net
http://www.GreenCoins.org

every 60 mins:
http://freebitco.in/
http://www.redcoins.co
http://www.dailybitcoins.org
http://www.bitcoins4.me