Most Faucets use CoinBox.me to track when you get paid
Half Hour Faucets (Free Bitcoin every half hour):
http://www.canhasbitcoin.com/
http://btc4you.com/
http://www.faucetbtc.com/
http://freebitcoins.me/
http://www.thefreebitcoins.com/
http://www.virtualfaucet.com/
http://www.freebtc4all.com/
http://www.bitcoinspain.net/index.php
http://www.thebitcoin.me/
http://www.elbitcoingratis.es/
http://www.rawbitcoins.com/
http://www.freebtc4all.com/
http://www.greencoins.org/
http://www.srbitcoin.com/
http://www.nioctib.net/
Hourly Faucets
http://freebitco.in/?r=27077 (note that this is pretty much gambling on how much payout you get) (and it doesn't work with adblock)
http://www.bitcoins4.me/
http://dailybitcoins.org/index.php?rid=987444
http://dailybitcoins.org/index.php?rid=987444