Its a website where you log in your bitcoin wallet address and then every allotted time period (in this case 15 minutes) you click through a recaptcha to claim your Satoshi. Satoshi is the denomination of Bitcoin. I manage to claim about 1000 satoshi every hour when I'm working on my laptop. When you get your account up to 10,000 you can withdraw the funds into your wallet and tart again. There are loads of different faucets out there. I find Bonus Bitcoin has the best rates and authentic payouts. I hope this has answered your question thefinanceguy
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