I don't really understand what is this BitCoin or digital currency, but what interesting is how it validate each transaction by using P2P, meaning that each computer that installed BitCoin client has all the transaction record for validation (if I am not mistaken). But here's something I would love to share, get free BitCoin.
1. Bitcoin Faucet - one time only, for new address.
2. MyCryptCoin - visit the site every day to get free bitcoin.
3. BitCrate - visit the site daily to get free coin.
4. CoinAd - visit the site daily for free coin.
5. FiveMinuteCoin - wait five minute at the site to get free coin.