Here is a list of sites that allow you to get bitcoins.
I have listed them in order of the most lucrative to the least lucrative. If the bitcoin faucet has an option to build up an amount before you get payment, always choose this as it minimizes the transaction fees once you come to spend your bitcoins. See here for how transaction fees work.
Bitcoinget On this site you can earn bitcoins for doing mechanical turk style tasks and watching video ads
Bitvisitor This site asks you to view web adverts in order to earn bitcoins They have rather a lot of ads, so you have a chance of earning quite a bit every day.
Bitcoin Addict This pays out millibitcoins once a day, plus there are jackpots for bigger wins
Bitcoins4me This is a faucet that gives you micro bitcoins every hour after you solve a captcha
Freebitcoine.me This faucet gives you microbitcoins every half hour
TheFreeBitcoins.com This faucet gives you microbitcoins every half hour
VirtualFaucet.com This faucet gives you microbitcoins every half hour
SrBitcoin.com This faucet gives you microbitcoins every half hour
BTC4You.com This faucet gives out microbitcoins every half hour
RawBitcoins.com This page gives out micro bitcoins every half hour after you solve a catcha
Canhasbitcoin.com. You get micro bitcoins every half hour
In addition to the faucets and advertising sites listed above, there are some bitcoin job boards that match up freelancers with those who wish to employ them and pay in bitcoin. Here are some of them: