In my opinion, the two best sites that allow you to earn bitcoin every 60 minutes. They offer a minimum of .00005 bitcoin per hour…check the coming prizes section to earn higher amounts of bitcoin.
  
CoinAd - http://cur.lv/g1n9
  
Daily BitCoins - http://cur.lv/g1on
  
The next page is a faucet that pays out every 12 hours.
  
Bitcoin Faucet - http://cur.lv/g1o5 (Amount of BTC varies)
  
The following pages offer a payout once every 24 hours.
  
NetLookUp - http://cur.lv/g1na
  
Cointicket - http://cur.lv/g1nb
  
BTC Free - http://cur.lv/g1nc
  
Bitcoin Addict - http://cur.lv/g1nd
  
Bit Crate - http://cur.lv/g1ne (This one is occasionally up….I still check every day)
  
Bit Coiner - http://cur.lv/g1ng (Prizes change every hour)
  
Daily Bunny Run - http://cur.lv/g1nh (Race bunnies for bitcoin)
  
GoxKeyGen - http://cur.lv/g21j (Redeem your code at http://cur.lv/g21k )
  
BitStart - http://cur.lv/g2da (Enter your wallet address at the bottom of the page)
  
The next website gives bitcoin once per week.
  
Bitcoin – http://cur.lv/g1ni
  
The following websites pay you in bitcoin to view and watch ads.  At the time of this blog they are all working and paying out in a timely manner.
  
BitCoin Get - http://cur.lv/g1nj (Earn 200 uBTC per video watched)
  
Cointube TV - http://cur.lv/g2cn (Pay up to .4 mBTC per video watched)
  
CoinVisitor - http://cur.lv/g1nm (Pay varying amounts of bitcoin for 10 to 30 second ads)
  
Earn Free Bitcoins - http://cur.lv/g1nn (Pays up to .412 mBTC a day or more)
  
BitVisitor - http://cur.lv/g1np (Pays up to .08 mBTC per video watched)
  
BitCoin 4 You - http://cur.lv/g1nx (Pays up to .42 mBTC every 24 hours)
  
Free BTC - http://cur.lv/g1o0 (Earn Satoshi’s which you trade out for BTC)
  
Bitcoins Easy - http://cur.lv/g1o4 (Get paid to watch ads, read ads and referrals)
  
The next sites are places that you can tag or paste your links to earn bitcoin.
  
Bit Pasta – http://cur.lv/g1oo (Will advise after I learn more)
  
Bit Bin - http://cur.lv/g1o8 (Just started with this site)
  
TagPad - http://cur.lv/g1o9 (Just started with this site)
  
Shorten URL’s on your web site or in your posts to earn money for click throughs.
  
CoinUrl - http://coinurl.com/index.php?ref=8889b2d94ce6c7a9b4658b155ca8224a
  
Sites where you can trade your labor for bitcoin.  I would recommend setting up another e-mail address for some of the survey sites.
  
Free Easy Bitcoin - http://cur.lv/g1oa (Surveys and games – beware bundled software) 
  
BTC4FREE - http://cur.lv/g1oc (Complete offers and surveys for BTC)
  
Free Digital Money - http://cur.lv/g1od (More offers and surveys for BTC)
  
Coin Worker - http://cur.lv/g1oe (Personal favorite. Complete tasks for BTC – No surveys)
  
I Want Free Bitcoins - http://cur.lv/g2d8 (Get paid BTC for offers and surveys)