http://www.bitcoin-services.co.uk/free-bitcoins.php

Bitcoin Services is another free bitcoin site which allows you to complete offers (some free, some paid), answer surveys, and download software to earn bitcoin. You can also watch videos to earn bitcoin (although, they seem to have a limited quantity).

http://www.bitcoinreward.net/

Bitcoin Reward is a pretty awesome site -- one of my new favorites. It's a great non-spammy site that allows you to complete simple jobs for Bitcoin. The best part about this site is there's no funky registration process -- just enter your Bitcoin address and start earning immediately.

http://www.bitvisitor.com/

BitVisitor pays you bitcoin for visiting websites. BitVisitor shows you each website for 5 minutes (during which time you can check out the site), and pays you for each site you visit. Between sites, you're required to enter a captcha.

http://freebitcoinwin.com/

Insert the captchas and click Rolland click ROLL! to win free Bitcoins. You can come back and play every hour to win free bitcoins each time! Also you can multiply your earned bitcoins with the Multiplu BTC game.At this state, up to 0.69 BTC in a single Roll if you are very the lucky. The earnings aren't terribly high. They're going to increase within the following days. Keep visiting our website!

What is Bitcoin?

Bitcoin is a digital decentralized crypto money, that accepts up to eight decimals of digits and is finite. In total, there'll be regarding 21 million bitcoins, however solely half of the bitcoins are already mined throught a process called bitcoin mining.